Article
Polymer Science
Pengkai Qin, Linbo Wu, Bogeng Li, Naixiang Li, Xiaohu Pan, Junming Dai
Summary: Comparative study of gas barrier properties between PBST and PBAT revealed that PBST exhibited superior barrier properties for O-2 and CO2 due to its slower segment movement and less free volume, while its improvement in water vapor barrier was limited by its better hydrophilicity countering the partial contribution of slower segment movement.
Article
Polymer Science
Qianfeng Wang, Jinggang Wang, Yunxiao Dong, Xiaoqin Zhang, Han Hu, Lionel OYoung, Di Hu, Jin Zhu
Summary: Copolyesters based on FDCA have gained attention due to their superior gas barrier properties and biodegradability. This study assessed the influence of aliphatic diol segmental lengths on the properties of FDCA-based copolyesters. It was found that increasing diol segmental lengths resulted in decreased glass transition temperature and a zig-zag variation in melting temperature. Furthermore, the copolyesters exhibited good mechanical properties, gas barrier properties, and rapid biodegradability.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Alfred Bazin, Luc Averous, Eric Pollet
Summary: Enzymatic polymerization is a promising approach for greener synthesis of biobased polyesters, with the successful synthesis of aliphatic-aromatic copolyesters in this study. By changing the solvent and adjusting reaction conditions, the molecular weight was enhanced and the properties were improved, offering new perspectives for the potential applications of enzymatically-produced biobased aromatic copolyesters.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Qianfeng Wang, Jiayi Li, Jinggang Wang, Han Hu, Yunxiao Dong, Drow Lionel O'Young, Di Hu, Xiaoqin Zhang, Dong-Qing Wei, Jin Zhu
Summary: The demand for sustainable development has led to increasing attention in biobased polyesters due to their adjustable thermal and mechanical properties and biodegradability. In this study, a list of novel aromatic-aliphatic poly(alkylene adipate-co-thiophenedicarboxylate) (PAATh) copolyesters was synthesized using a novel bioderived aromatic diacid. These copolyesters showed high thermal stability, excellent tensile strength, and superior gas barrier performances. The biodegradability of PAAThs was fully evaluated, and the effect of diol components on enzymatic degradation was revealed by computational analysis. This study provides insights into the development of promising substitutes for commercial biodegradable polyesters and sheds light on their complicated degradation mechanisms.
Article
Polymer Science
Yunxiao Dong, Jinggang Wang, Yong Yang, Qianfeng Wang, Xiaoqin Zhang, Han Hu, Jin Zhu
Summary: Poly(butylene diglycolate-co-furandicarboxylate) (PBDF) copolyesters were synthesized and characterized in terms of their thermal, mechanical, permeable, and degradable properties. Among them, PBDF40 showed outstanding mechanical properties and barrier properties. Additionally, PBDFs exhibited accelerated rates of hydrolysis and composting degradation. These findings indicate the potential application of PBDFs, especially PBDF40, in food packaging.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Multidisciplinary
Jing Wu, Jiefei Qi, Yiming Lin, Yong Chen, Xu Zhang, Rongliang Wu, Huaping Wang
Summary: Isohexides are versatile carbohydrate-based building blocks for designing biodegradable polymers with tunable biodegradability and enhanced material properties. However, the limited reactivity and thermal stability of isohexides, especially the isomers with endo-hydroxyl groups, hamper their practical applications. This study successfully synthesized fully aliphatic copolyesters based on two isohexide stereoisomers, isosorbide (IS) and isomannide (IM), via a mild lipase-catalyzed polymerization technique, resulting in products with high molecular weights, negligible discoloration, and improved thermal stabilities compared to conventional melt polymerization methods.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Kwang Hyun Paek, Sung Gap Im
Summary: This study demonstrates the potential of recycling PET waste and sustainable packaging applications through the synthesis of biodegradable aromatic-aliphatic copolymers with excellent properties from BHET.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Xionggang Wang, Xia Li, Lingna Cui, Yuejun Liu, Shuhong Fan
Summary: In this study, biodegradable PBAT/Ti3C2TX composite films were prepared using melt mixing, and the water vapor and oxygen barrier performance were improved by biaxial stretching.
Article
Polymer Science
Dereje Kebebew Debeli, Linbo Wu, Fangfang Huang
Summary: Novel nanocomposite coating films (NCCFs) composed of PBAT substrate and thin sulfonated PBAT/MMT nanocomposite coating (NCC) layer were prepared. The NCC layer endows the NCCFs with superior oxygen barrier and highly improved stiffness, while the PBAT substrate mainly contributes to the tensile strength and toughness.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Feng-Xiang Gao, Yi Cai, Shun-Jie Liu, Xian-Hong Wang
Summary: A reactive compatibilizer was used to enhance the properties of PBAT/PPC blends, leading to improved water vapor barrier property, tensile strength, and elongation at break.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Food Science & Technology
Harikrishnan Pulikkalparambil, Danaya Phothisarattana, Khwanchat Promhuad, Nathdanai Harnkarnsujarit
Summary: This study investigates the improvement of barrier properties in biodegradable food packaging by blending PBAT and PBS polyester polymers with silicon dioxide nanoparticles. The addition of 1% silicon dioxide nanoparticles significantly reduces water vapor and oxygen permeability, while also improving mechanical properties.
Article
Polymer Science
Ramin Hosseinnezhad
Summary: This study investigates the shear-induced non-isothermal crystallization of two novel aliphatic-aromatic copolyesters, revealing the significant influence of shear conditions on crystallization initiation and growth, as well as the shift to higher crystallization temperatures due to the presence of cellulose nanofibers.
Article
Polymer Science
Aqsa Kanwal, Min Zhang, Faisal Sharaf, Chengtao Li
Summary: Biodegradable polymers such as aliphatic-aromatic polymers play a significant role in mitigating plastic pollution issues, possessing good mechanical properties and biodegradability. With advances in molecular biology, specific microbes have been identified to effectively degrade PBAT, offering positive implications for environmental remediation.
Article
Thermodynamics
Lipeng Liu, Ying Lu, Mingze Xia, Bo Wang, Yi Cheng, Zhiyong Wei
Summary: Aliphatic polycarbonates (APCs) have been synthesized using dimethyl carbonate (DMC) and different lengths of aliphatic diols, showing increased flexibility and crystallization with more methylene groups in the repeating units. However, the rigidity of the ester group affected the strength and Young's modulus of APCs, which decreased and then increased. Brill transition increased the distance between intermolecular chains, affecting the barrier properties of poly(octamethylene carbonate).
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Food Science & Technology
Kehinde Olonisakin, Aishi Wen, Suping He, Huiping Lin, Wen Tao, Shanwei Chen, Wensheng Lin, Ran Li, Xin-xiang Zhang, Wenbin Yang
Summary: Poly (butylene adipate-co-terephthalate) (PBAT) is a biodegradable polymer used in the food packaging industry. A PBAT composite film was prepared using a green approach, with epoxidized soya bean oil (ESO) and encapsulated lignin (Lig)/tannic acid (Ta) as fillers. The addition of ESO-Lig-Ta improved tensile strength, reduced UV transmission, and decreased water vapor and oxygen transmission rate. The composite film showed potential for short-lived fresh food packaging and long-term preservation of dry food products.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Hongzhou Xie, Linbo Wu, Bo-Geng Li, Philippe Dubois
Article
Polymer Science
Jing Lu, Lizhong Zhou, Hongzhou Xie, Linbo Wu, Bo-Geng Li
EUROPEAN POLYMER JOURNAL
(2019)
Article
Engineering, Chemical
Junjie Zhu, Linbo Wu, Zhiyang Bu, Suyun Jie, Bo-Geng Li
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Chemistry, Multidisciplinary
Qianqiu Xing, Pietro Buono, David Ruch, Philippe Dubois, Linbo Wu, Wen Jun Wang
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Polymer Science
Jing Lu, Zhisong Li, Lizhong Zhou, Linbo Wu, Bo-Geng Li
POLYMER DEGRADATION AND STABILITY
(2019)
Article
Polymer Science
Hongxu Meng, Zhisong Li, Linbo Wu, Bo-Geng Li, Yumiao Hu, Kecheng Wang
Summary: The study synthesized a biobased polyester with high gas barrier properties, tensile modulus, and strength through melt copolycondensation, and found that copolymers with less than a certain amount of DF unit showed a decrease in glass transition temperature in a certain composition range.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Yanru Chen, Linbo Wu, Bo-Geng Li
Summary: PPecBT random copolyesters with a glass transition temperature of up to 136 degrees C were synthesized using a two-step melting polycondensation process. The addition of PeDO as a diol comonomer helped improve the thermal stability of PPecBT and reduce undesired melt foaming during processing. These copolymers exhibited superior tensile ductility, strength, and modulus, with their properties being determined by intrinsic viscosity, copolymer composition, and cis-cB unit fraction.
Article
Chemistry, Multidisciplinary
Lizhong Zhou, Pengkai Qin, Linbo Wu, Bo-Geng Li, Philippe Dubois
Summary: Long-chain aliphatic polyesters with PE-like structure and properties were synthesized through melt polycondensation. They showed high intrinsic viscosity, PE-like crystal structure, and excellent tensile behavior. Long-chain polyesters exhibited chain length-dependent biodegradability and superior performance compared to PBAT copolyester.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yanru Chen, Linbo Wu, Bo-Geng Li
Summary: Poly(cyclohexane dimethylene-co-2,2,4,4-tetramethyl cyclobutylene terephthalate) (PCcBT) is a transparent, safe, and heat-resistant copolyester that has been commercialized as a replacement for bisphenol A polycarbonate. In this study, 2-methyl-1,3-propanediol (MPO) or 3-methyl-1,5-pentanediol (Pe'DO) were used as diol comonomers to improve the synthesis and processing of PCcBT. The presence of Pe'DO or MPO enhanced the solubility of CBDO and reduced sublimation, resulting in improved thermal stability. The copolymers showed better performance than PCcBT, with PMcBT exhibiting the best overall properties.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Hongzhou Xie, Hongxu Meng, Linbo Wu, Bo-Geng Li, Philippe Dubois
Summary: Poly(ethylene 2,5-furandicarboxylate) (PEF) was modified with aliphatic polycarbonate (APC) diols by chain extension/coupling to obtain PEF materials with improved ductility, impact toughness, high strength, modulus, and excellent gas barrier performance.
Article
Engineering, Chemical
Dereje Kebebew Debeli, Fangfang Huang, Linbo Wu
Summary: PBAT-based nanocomposite films with ultra-high oxygen barrier were prepared by exfoliating Na-montmorillonite in a sulfonated PBAT copolyester matrix. The films showed highly oriented MMT at certain MMT volume percentage and network-like MMT morphology at higher MMT loadings. The nanocomposite film with 32 vol% MMT exhibited significantly improved oxygen barrier compared to PBAT.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Polymer Science
Hongxu Meng, Zhisong Li, Linbo Wu
Summary: In this study, PEF was modified by copolycondensation with TDCA, resulting in the synthesis of PEThF copolyesters. PEThF copolyesters exhibited high Tg, excellent strength and rigidity, as well as superior gas barrier properties. Moreover, the addition of 20-30% TDCA units significantly improved the ductility of PEF while maintaining its performance advantages.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Dereje Kebebew Debeli, Linbo Wu, Fangfang Huang
Summary: Novel nanocomposite coating films (NCCFs) composed of PBAT substrate and thin sulfonated PBAT/MMT nanocomposite coating (NCC) layer were prepared. The NCC layer endows the NCCFs with superior oxygen barrier and highly improved stiffness, while the PBAT substrate mainly contributes to the tensile strength and toughness.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Multidisciplinary
Junjie Zhu, Linbo Wu, Zhiyang Bu, Suyun Jie, Bo-Geng Li
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
