Article
Polymer Science
Mariana Alves Leite Dutra, Nivia do Nascimento Marques, Men de Sa Moreira de Souza Filho, Rosangela de Carvalho Balaban
Summary: The study evaluated the effectiveness of low-cost polyacrylamide/starch hybrid hydrogels in removing organic pollutants from wastewater, particularly phenol, and found that the hydrogel with the lowest amount of starch and crosslinking agent had the highest phenol adsorption capacity. The adsorption isotherm data fit well with Langmuir and Freundlich models, with the Freundlich isotherm model showing the best fit for the adsorption process. Desorption study revealed a minimum of about 60% phenol release, indicating the potential reusability for wastewater treatment.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Sima Rahmani, Alireza Sharif, Asghar Habibnejad Korayem
Summary: The use of chitosan-modified graphene oxide nanosheets (GO-CS5) improved dispersion stability in a cementitious environment, reducing agglomeration issues in cement mortar. The addition of GO-CS5 resulted in lower fluidity loss and maintained mechanical strength in cement mortar.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Shuqin Xu, Huimin Xiang, Zhuqun Wang, Xiaoli Tang, Yan Zhang, Xiaobei Zhan, Jinghua Chen
Summary: Escherichia coli K4 expressed fructosylated chondroitin (K4) which was further modified to produce chondroitin sulfate A (CSA). Conjugates of glycosaminoglycans including K4, defructosylated K4, and CSA showed linear luminescence response to concentration, with CSA-A selected for in vitro bioimaging study. CSA-A exhibited effective internalization by astrocytes with low toxicity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Xin Chen, Gangliang Huang
Summary: Garlic polysaccharide (PS) was extracted from garlic using hot-water extraction, and acetylated garlic polysaccharide (AcPS) and garlic polysaccharide-zinc complex (ZnPS) were synthesized. The modifications successfully enhanced the antioxidant activities, with AcPS and ZnPS showing stronger scavenging abilities on hydroxyl and superoxide anion radicals compared to PS. AcPS also exhibited significantly stronger inhibitory effect on lipid peroxidation, indicating its potential as an antioxidant.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Polymer Science
Veino Risto Shaumbwa, Dagang Liu, Bright Archer, Jinlei Li, Fan Su
Summary: Magnetic chitosan has garnered attention for its low cost, biodegradability, green sources, and magnetic intensity. It is used in wastewater treatment, medicine, pharmaceuticals, and electronics due to its potential applications and ease of modification and control with an external magnetic field.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Haoying Song, Na Hu, Ziwei Gao, Baohui Zhang, Junjie Hu, Zhenpeng Qiu, Guohua Zheng, Cong Chang, Yan Meng
Summary: In this study, gold nanoparticles were loaded onto dendritic nanotubes self-assembled by triple-helix polysaccharides from black fungus. The complex showed potential anticancer activities by inducing apoptosis in HepG2 cells, which was attributed to ROS-mediated mitochondrial dysfunction. This work contributes to the development of using natural polysaccharides as substrates to stabilize nanoparticles in biomedical applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Zhiyu Chen, Jiali Yuan, Qinran Yu, Zhixin Luo, Cong Xie, Kaiyuan Zhang, Longxiang Tang, Huiqing Wang
Summary: By combining green dissolving/regeneration and in situ reduction strategy, high strength antibacterial CS membranes were constructed with excellent antibacterial activities and adhesive ability, potentially serving as antibacterial adhesion barrier to accelerate wound healing.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Deepika Dangi, Pradeep Sharma, Vineet Kumar
Summary: Galactomannans are functionalized biopolymers widely used for their diverse applications. In this study, highly viscous solutions were obtained by treating guar gum with chloromethyl oxirane, resulting in the formation of new 1,3-diethereal linkages. Varying the amount of chloromethyl oxirane affected the rheological properties, with lower amounts leading to improved viscosity and higher amounts resulting in insoluble products. The modified galactomannans showed resistance to acid, salt, and alkali, making them suitable for various end-use applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Gleb O. Vasiliev, Marina A. Pigaleva, Inesa V. Blagodatskikh, Dmitrii M. Mazur, Eduard E. Levin, Alexander V. Naumkin, Elena P. Kharitonova, Marat O. Gallyamov
Summary: This study explores a method of chitosan decomposition using peroxycarbonic acid solution under high CO2 pressure. The results show that chitosan oligomers with suitable molecular weight can be obtained even with low hydrogen peroxide concentrations and short processing times. The obtained polymer exhibits good ability to form porous matrices, but its thermal stability is somewhat decreased.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Polymer Science
Yu Bei, Yufeng Ma, Fei Song, Zhimin Kou, Lihong Hu, Caiying Bo, Puyou Jia, Yonghong Zhou
Summary: Self-healing polymer materials derived from biomass resources have rapidly developed in the past 20 years, providing advantages over thermosetting materials in terms of replacing them, extending lifespan, and reducing costs, thus holding significant promise for environmental sustainability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Yumei Bai, Fan Zhao, Jun Shen, Yuehong Zhang
Summary: A water-resistant adhesive for plywood panels for engineered wood floors was developed using thermal-chemically treated wheat flour, polyvinyl alcohol, and polymeric diphenylmethane diisocyanate as the cross-linker. Studies showed that the water resistance of the thermal-SDS-treated WF-based adhesive was significantly improved, mainly attributed to the formation of a three-dimensional crosslinking network, Maillard reaction, and increased crosslinking.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Xiaoqiang Jin, Huihong Jiang, Fenghui Qiao, Weipin Huang, Xiaojiong Bao, Zhengke Wang, Qiaoling Hu
Summary: This study introduced a new type of multifunctional hydrogels with excellent properties, including ultrastretchability, adhesiveness, strain sensitivity, biocompatibility, and self-cleaning function. These hydrogels have great potential for practical application as strain sensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Noor Izyan Syazana Mohd Yusoff, Weng Hong Tham, Mat Uzir Wahit, Mohammed Rafiq Abdul Kadir, Tuck-Whye Wong
Summary: Biodegradable poly(sorbitol sebacate malate)/hydroxyapatite composites were synthesized through one-step polycondensation, and the addition of hydroxyapatite improved the mechanical properties of the materials. In vitro degradation and cytotoxicity tests showed good degradation performance and biocompatibility of the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Majid Alizadeh Moghadam, Reza Mohammadi, Ehsan Sadeghi, Mohammad Amin Mohammadifar, Mohammad Nejatian, Maryam Fallah, Milad Rouhi
Summary: This study investigated the effects of gum tragacanth from two different species, combined with cellulose nanofibers, on the physico-mechanical and structural properties of PVA nanocomposite film. Increasing the content of both gums decreased water solubility and water vapor permeability of the films, with 30% GT-P showing the most significant decrease. The optimum treatment was found to be the film containing 10% GT-P, with the highest tensile strength and elongation at break.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Monika, Khalid Mehmood, Vimal Katiyar
Summary: The blend of PLA/FG with the presence of DCP through melt extrusion process shows potential for producing films with tailored characteristics, improved interfacial interaction, increased toughness, UV-C blocking effect, and hydrophobicity. The study also confirmed the grafting of PLA chains on FG through formation of new C-C linkage, and POM studies revealed higher crystal density in PLA/1FG compared to PLA at 120 degrees C. This melt extrusion process has great potential for developing bionanocomposite films and overcoming specific drawbacks of FG with the assistance of DCP.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
