Article
Materials Science, Multidisciplinary
Chenxin Nie, Yongqian Shi, Songqiong Jiang, Hengrui Wang, Miao Liu, Ruizhe Huang, Yuezhan Feng, Libi Fu, Fuqiang Yang
Summary: Flexible cotton/thermoplastic polyurethane (TPU) hierarchical composites with excellent flame retardancy and mechanical properties were successfully developed. The cotton internal layer was obtained through multiple dip coating, while the TPU/ammonium polyphosphate (APP) composites served as the external layers. By adjusting the dip coating circle, the flame retardant and mechanical properties of the composites were effectively tuned. This study provides a promising approach for the design of flexible and multifunctional cotton/polymer composites.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Poulomi Dasgupta, Sayan Basak, Srijoni Sengupta, Tamalika Das, Koushik Pal, Sanjay K. Bhattacharyya, Abhijit Bandyopadhyay
Summary: This paper reports the development and self-healing mechanism of self-healable thermoplastic polyurethane (TPU) compounds. It was found that adding more EVA in the masterbatch can enhance the healing efficiency, making them ideal for applications in cable insulation and shape-memory devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Composites
Haoxuan Wang, Jingwen Yang, Syed Umer, Ning Zhu, Guang Yang, Yafang Li, Jing Yan
Summary: In order to achieve sustainable wearable applications, a flexible triboelectric nanogenerator was proposed using thermoplastic polyurethane film with a porous structure and multi-walled carbon nanotubes. The design not only possesses flexibility, durability, and biocompatibility, but also enhances the output performance and allows for integration and wearing convenience. Experimental results show that the output voltage and current are significantly improved under certain concentrations of TPU and MWCNT, and the harvested electrical energy is sufficient to power a certain number of LEDs or for charging purposes.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Xiaolong Su, Shikui Jia, Le Cao, Demei Yu
Summary: A novel strategy to improve the toughness of polylactic acid is developed in this work by adjusting processing temperature during the melt-blending process, resulting in ternary blends with improved interfacial compatibility and fibrillated micro-morphology. The synergistic action of in-situ fibrillated TPU and stereocomplex (SC) crystals significantly enhances the toughness of the ternary blends without sacrificing its own tensile strength, while also improving their melt strength for processing applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Paper & Wood
Saebohm Jhang, Woongbi Cho, Seo Ku Lee, Ah Ran Yu, Jae Gyeong Lee, Kyungho Jung, Yunqiao Pu, Chang Geun Yoo, Jeong Jae Wie
Summary: This study investigates the effects of functional groups on the mechanical properties of composites by examining chemically modified microcrystalline methyl cellulose. It is found that high substitution levels of hydroxypropyl group can improve the mechanical properties and density of the composites.
Article
Biochemistry & Molecular Biology
Xuenan Sun, Xinze Yang, Jiajing Zhang, Bin Shang, Pei Lyu, Chunhua Zhang, Xin Liu, Liangjun Xia
Summary: The reinforcement of polymer nanocomposites can be achieved by selecting the appropriate fabrication method, surface modification, and filler orientation. In this study, thermoplastic polyurethane (TPU) composite films with excellent mechanical properties were prepared using nonsolvent-induced phase separation method with ternary solvents and 3-Glycidyloxypropyltrimethoxysilane-modified cellulose nanocrystals (GLCNCs). The incorporation of GLCNCs in TPU improved its tensile strain, toughness, and elastic recovery rate. Alignment of CNCs in the composites further enhanced their mechanical properties. This study presents a facile and effective strategy for fabricating mechanically enhanced TPU composites.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Bingbing Zeng, Meiyu Cao, Jiabin Shen, Keke Yang, Yu Zheng, Shaoyun Guo
Summary: In this study, ternary shape-memory blends consisting of TPU, PLA, and PPC were prepared via direct melt blending. The composition of LPC can be adjusted to tailor the morphology of switch PLA and PPC and the interfacial area between TPU and LPC, resulting in tunable dual- and triple-shape-memory effects. The blend containing 15 wt% PLA showed the best TSME, characterized both qualitatively and quantitatively.
Article
Polymer Science
Mutsumi Takano, Koudai Takamatsu, Hiromu Saito
Summary: A high-strength elastomer can be obtained by heat elongation of a thermoplastic polyurethane film with a high content of crystalline hard segments. The densification of the stacked HS domains during elongation enhances the material and prevents fracture.
Article
Engineering, Manufacturing
Xiang Lin, Mengyuan Hao, Jiayang Ying, Runguo Wang, Yonglai Lu, Min Gong, Liqun Zhang, Dongrui Wang, Liang Zhang
Summary: This study investigates the influence of interface development on the mechanical properties of 3D-printed parts in the ME3DP process. The results show that increasing the envelope temperature improves the interface bonding, promotes crystallization kinetics, and enhances the yield stress of printed parts.
ADDITIVE MANUFACTURING
(2022)
Article
Polymer Science
Mingtao Sun, Shuang Huang, Muhuo Yu, Keqing Han
Summary: The melt blending of polylactic acid (PLA) and thermoplastic silicone polyurethane (TPSiU) elastomer effectively toughens PLA by improving its mechanical properties and impact strength.
Article
Polymer Science
Zexia Dai, Zhixuan Feng, Congcong Feng, Liyan Meng, Chunying Li, Chao Wang, Limin Han, Yijia Bai
Summary: The study shows that significant enhancement in piezoelectric properties of TPU blended BNT-PVDF composite films can be achieved by adjusting TPU content and improving microstructure as well as increasing interfacial contact area.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zhaoyang Li, Yu Sun, Bing Zhou, Yuezhan Feng, Chuntai Liu, Changyu Shen
Summary: A TPU foam (TF) was prepared by salt and then a MXene nanosheet wrapped TF (TPU@PDA/MXene foam referred to as TPMF) was successfully fabricated. This foam exhibited good conductivity and outstanding electromagnetic interference shielding effectiveness (EMI SE), making it suitable for wearable smart devices and aerospace equipment.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Jie Sun, Xiaobin Zou, Zhiqian Xu, Zhen Ge
Summary: Organosilicon modified polyurethane elastomers (Si-MTPUs) were synthesized to improve the anti-graffiti property of thermoplastic polyurethane elastomers (TPUs). Si-MTPUs were prepared from polydimethylsiloxane (PDMS) and polytetramethylene glycol (PTMG) as mixed soft segment, 1,4-butanediol (BDO) and imidazole salt ionic liquid N-glyceryl-N-methyl imidazolium chloride ([MIMl,g]Cl) used as chain extender, and 4,4'-dicyclohexylmethane diisocyanate (HMDI). The mechanical properties of Si-MTPU-10 with a PDMS content of 10 wt% were optimized, with a maximum tensile strength of 32.3 MPa and elongation at break of 656%. The surface energy reached the minimum value of 23.1 mN m(-1) with the best anti-graffiti performance.
Article
Polymer Science
Jorge Wu Mok, Natnael Behabtu, Christian Lenges, Ibrahim Sendijarevic, Aisa Sendijarevic
Summary: Enzymatic polymerization technology converts sucrose into engineered polysaccharides, with alpha-1,3 polyglucose being a particularly effective additive for improving mechanical properties of polyurethane materials. The addition of alpha-1,3 glucan induces hard segment crystallization in the polyurethane matrix, leading to increased hardness and tensile modulus.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Maya Pishvar, Mehrad Amirkhosravi, Ica Manas-Zloczower
Summary: In this study, TPU-PTFE nanocomposites with improved thermomechanical properties were successfully made by fibrillation of micron-sized PTFE particulates inside the TPU matrix. PTFE forms a fibrillary network inside the TPU matrix, which enhances the creep behavior, thermal stability, storage modulus, and reduces the thermal expansion coefficient of the nanocomposites. The glass transition temperature of nanocomposites with 10 wt % PTFE shows two transitions, while a single peak is observed for the neat TPU.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Textiles
Kajal Sarkar, Sipra Khanra, Sujit Sharma, Sanjoy Kumar Ghorai, Santanu Chattopadhyay
Summary: A self-assembled three-dimensional microstructured polymer nanocomposite was created using dual carbon black through a simple solution mixing process. The nanocomposite demonstrated tunable electromagnetic interference shielding effectiveness when applied on cotton fabric.
JOURNAL OF THE TEXTILE INSTITUTE
(2023)
Article
Materials Science, Multidisciplinary
Mohit Goswami, Sujit Sharma, Moni Mahesh Ghosh, Nils Hendrik Kroeger, Filippo Berto, Goutam Chakraborty, Santanu Chattopadhyay
Summary: This study aims to develop a damage model to characterize the effect of geometric configuration on elastomeric composites. Experimental results show that the change in geometric configuration can affect the fracture properties of the material. Therefore, this model is expected to solve fracture-related issues in elastomeric composites used in electric vehicle tires and related applications.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Environmental
Sujit Sharma, Debottam Goswami, Mohit Goswami, Arghya Deb, Bhojraj Padhan, Santanu Chattopadhyay
Summary: This study investigates the extrudate deformation and interface of multi-component elastomeric profiles using extrusion simulation. The results indicate lower structural stability for extrudates with different materials compared to other extrudates.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Computer Science, Hardware & Architecture
Ramesh Sambangi, Arun Sammit Pandey, Kanchan Manna, Sudipta Mahapatra, Santanu Chattopadhyay
Summary: Finding an optimal application mapping solution in a manycore processor is a challenging problem. Heuristic search techniques can find near-optimal solutions faster, but often get stuck in local minima. Machine learning methods can learn heuristics from training data on their own and produce better mapping solutions.
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
(2023)
Review
Pharmacology & Pharmacy
Nikhil Kumar, Biswajoy Ghosh, Abhay Kumar, Riya Koley, Santanu Dhara, Santanu Chattopadhyay
Summary: In recent years, multi-stimuli responsive polymers have been proven to be highly useful as regenerative biomaterials, as they can respond to various physiological or externally applied stimuli. These biocompatible intelligent materials are designed to detect the surrounding physiological environments and release therapeutic cargos on-demand. Multi-layered smart hydrogels have been the preferred materials for drug delivery. The review highlights the formation mechanism, morphology, orientation, and formulation aspects of multi-layered structures, as well as recent studies and potential applications. The 3D bioprinting-electrospinning approach for designing smart hydrogels is also discussed as a new perspective for expanding their applications in controlled drug delivery and tissue engineering.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Abhijit Bera, Mohit Goswami, Debabrata Ganguly, Jyoti Prakash Rath, S. Ramakrishnan, Job Kuriakose, S. K. P. Amarnath, Santanu Chattopadhyay
Summary: Producing a green tyre tread compound with high silica loading remains a difficult task for all tyre industries globally. The presence of non-rubber constituents disrupts the silanization reaction in the silica-filled natural rubber composite. The introduction of sorbitol as a blocking agent improves the dispersion of silica and enhances the technical properties of the compound.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Abhijit Bera, Debabrata Ganguly, Jyoti Prakash Rath, S. Ramakrishnan, Job Kuriakose, S. K. P. Amarnath, Santanu Chattopadhyay
Summary: The effect of phospholipid, sorbitol, and their mixed combination in silica dispersion for isoprene rubber matrix with a fixed loading of silica and CB ratio (30/20) was compared with the effect of DPNR composite. The higher loading of silica in tyre tread compound reduces rolling resistance, contributing to a greener and more sustainable approach. Phospholipid was proven to be an ideal vulcanizate for tyre tread application due to its superior performance, including improved elastic storage modulus, reduced Tan delta at 70 degrees C, and enhanced key properties. However, the combination of sorbitol and phospholipid showed an interaction but had inferior mechanical strength and Tan delta at 0 degrees C, making it unsuitable as an ideal compound. The presence of phospholipid in the compound significantly improved its overall performance, especially Tan delta at 0 degrees C, for tyre tread application.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Correction
Materials Science, Biomaterials
Lakshmi M. Mukundan, S. Remya Nirmal, Nikhil Kumar, Santanu Dhara, Santanu Chattopadhyay
Summary: In this study, engineered nanostructures were incorporated into sol-gel bioactive glass, leading to enhanced bioactivity and modulated drug delivery. The findings are significant for the development of bioactive materials and exploration of drug delivery systems.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Materials Science, Multidisciplinary
Abhijit Bera, Bharat Manna, Debabrata Ganguly, S. K. P. Amarnath, Samik Nanda, Amit Ghosh, Santanu Chattopadhyay
Summary: Incorporating a bio-based sugar alcohol into CPI latex through protein-sugar conjugates shows significant improvement in key properties of CPI vulcanizates. Molecular dynamics study confirms stable conformation of the CPI matrix in the presence of silica, and successful blocking of unwanted substances' functional groups in CPI.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Suchismita Sahoo, Debdipta Basu, Abhay Kumar, Priti Rasam, Ankush Koundal, Manohar Nawale, Rajkumar Kasilingam, Santanu Chattopadhyay
Summary: The utilization of bio-waste contributes to sustainable development and solid waste management. The pyrolytic extract of coconut shell bio-waste shows potential as a plasticizer in SBR, increasing mechanical properties and thermal stability compared to conventional aromatic oil.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Abhijit Bera, Debabrata Ganguly, Roumita Hore, Jyoti Prakash Rath, S. Ramakrishnan, Job Kuriakose, S. K. P. Amarnath, Santanu Chattopadhyay
Summary: To address the challenge of producing green and sustainable tyres, the concept of incorporating pre-vulcanized natural rubber (NR) gel into highly silica loaded NR composite may become popular. The gel, prepared using a sulfur curing system from NR latex, helped break down agglomerated silica particles and achieve a homogeneous dispersion evident from morphological analysis. This resulted in significant reductions in rolling resistance and heat build-up, as well as improvements in viscosity and processing behavior, making the gel a highly recommended tyre tread compound for heavy vehicles.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Debottam Goswami, Santanu Chattopadhyay, Jayanta Das
Summary: We report the modification of martensitic transformation in Ni-Mn-Sn ribbons by controlling the post annealing cooling rate. Furnace-cooled sample exhibited the highest austenite stabilization and the lowest martensitic transformation temperature of 200.2 K, whereas air-cooled sample exhibited the highest transformation temperature of 298.5 K. The martensite evolved as ferromagnetic clusters in an anti-ferromagnetic matrix in the samples with high atomic disorder, whereas long-range anti-ferromagnetic correlations developed in the highly ordered samples.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Composites
Riya Koley, Uttam Kumar Ghorai, Santanu Chattopadhyay, Anil K. K. Bhowmick
Summary: The current focus in the elastomer industry is to explore biobased or natural filler options for compounds. A study investigated the reinforcing effect of waste drumstick-derived cellulose micro and nanofiber in styrene butadiene rubber (SBR) for the first time. The addition of cellulose fiber to SBR showed improved tensile strength and wet skid resistance, making it a sustainable filler for elastomer composites.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Riya Koley, Santanu Chattopadhyay, Anil K. K. Bhowmick
Summary: In this study, a new type of resin made from biophenol and furfural was used to cure styrene butadiene rubber (SBR) for the first time. The optimal conditions for the reaction were determined by studying various factors such as time, temperature, pH, and the ratio of furfural to biophenol. The synthesized resin showed improved mechanical properties and increased crosslink density when used for curing SBR.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Prachishree Panda, Agniva Dutta, Sourabh Pal, Debabrata Ganguly, Santanu Chattopadhyay, Narayan Chandra Das, Rajat K. Das
Summary: Lanthanide-based hydrogels have attracted significant attention recently due to their wide range of applications, including optical sensing, electroluminescent devices, and biological applications. In this study, a dual physically cross-linked hydrogel was developed using a micellar route, where a hydrophobic sensitizer enhanced the luminescence of Ln(3+) ions and acted as a ligand for metal-ligand cross-linking. The hydrogel exhibited responsiveness to various stimuli and tunable mechanical properties. The luminescent hydrogels showed excellent self-recovery, anti-fatigue properties, and self-healing characteristics, and demonstrated applications as a strain sensor and an anticounterfeiting ink.
NEW JOURNAL OF CHEMISTRY
(2023)
