Article
Polymer Science
Yue Yin, Bo Jiang, Linghui Meng
Summary: By introducing sulfonated 1,4-butanediol as the third monomer into PET polymer, the nucleation efficiency and crystallization temperature of PET were successfully increased, avoiding the damage to the mechanical properties of PET caused by excessive addition of traditional nucleating agents.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Composites
Lu He, Denghui Ren, Yaseen Muhammad, Fang Lai, Ruinan Pei, Zhenxia Zhao, Qingzhao Yang, Jing Li
Summary: Efficient and cost-effective modifiers are crucial for the development of high-performance asphalt materials. In this study, a polydopamine (PDA) chelated cobalt ion (Co2+)-assisted in situ growth strategy was used to anchor nanoporous zeolite imidazolium salt framework-67 (ZIF-67) on polyester (PET) fiber substrates for the preparation of styrene-butadiene-styrene block copolymer-modified asphalt (SBS-MA). The results showed that the incorporation of 1.5% fiber led to the best interfacial interaction at the modified asphalt fracture section, and the ZIF-67-PDA-PET fiber significantly improved the fiber-asphalt interfacial interaction.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Anna Raffaela de Matos Costa, Juliana Cysneiros Lima, Raquel dos Santos, Lhaira Souza Barreto, Mariana Alves Henrique, Laura Hecker de Carvalho, Yeda Medeiros Bastos de Almeida
Summary: This study investigates the rheological, morphological, and thermal properties of composites with different compositions, showing that thermal stability and degradation during processing are dependent on matrix composition and filler concentration. SEM images reveal partial adhesion of filler to matrices and filler pullout, while optical microscopy demonstrates particle agglomeration increasing with filler content. FTIR analysis indicates a shifting of absorption bands and selective dispersion of RHA through hydrogen bonding, supporting the idea of developing polymer composites with improved properties using the filler employed in this study.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Chutima Saeheng, Asira Fuongfuchat, Montira Sriyai, Donraporn Daranarong, Manasanan Namhongsa, Robert Molloy, Puttinan Meepowpan, Winita Punyodom
Summary: This study investigates the thermal and rheological properties of poly(L-lactide-co-epsilon-caprolactone), PLC, tapered block copolymer synthesized by ring-opening polymerization. The study found that the PLC copolymer exhibited transparent and elastomeric characteristics with a tapered monomer sequencing. The rheological properties of the PLC melt showed the presence of regular microstructures. Additionally, the study optimized the fabrication method to obtain the best results for porous tube production.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Hideto Tsuji, Sena Nogata, Hirotada Gamo, Kazuhiro Hikima, Atsunori Matsuda, Yuki Arakawa
Summary: This study investigated enantiomeric aromatic poly(lactic acid)s and their crystallization, thermal properties, and degradation. It was found that high molecular weight poly(L-mandelic acid) and poly(d-mandelic acid) exhibited predominant stereocomplex crystallization, while low molecular weight blends showed both stereocomplex and homo-crystallization. The aromatic poly(mandelic acid) had higher glass transition temperatures and lower melting temperatures compared to previously reported poly(lactic acid)s. The thermal degradation temperatures of the blends were higher than those of enantiomeric poly(lactic acid)s and similar to enantiomeric poly(2-hydroxybutanoic acid)s. The study also compared the crystallizability of aromatic poly(mandelic acid) and poly(phenyllactic acid).
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Polymer Science
Chunyan Qu, Yao Tang, Dezhi Wang, XuPeng Fan, Hongfeng Li, Changwei Liu, Kai Su, Daoxiang Zhao, Jiaqi Jing, Xiao Zhang
Summary: The study investigates the effects of incorporating amorphous polyimide segments into PA66, which can improve the properties of the material by preparing PA66-polyimide (PA-PI) copolymers to lower the glass transition temperature and enhance processability. As the polyimide content increases, the crystallinity and melting point of the copolymers decrease.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Lijuan Tao, Sai Chen, Haihui Liu, Na Han, Wei Li, Xingxiang Zhang
Summary: Formed by the copolymerization of HDA and AGE, the SSPCMs exhibit excellent thermal performance, making them suitable for various applications including solar energy storage and temperature control textiles.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xianglong Li, Jing Liu, Yishen Lu, Teng Hou, Jing Zhou, Xianggui Zhang, Lele Zhou, Mingbo Sun, Jieyu Xue, Bin Yang
Summary: This study demonstrates the effective fabrication of uniform degradable PBAT fibers using melt centrifugal spinning, with the modification of hydrophobic PBAT fibers into hydrophilic fibers using HBP. The obtained fibers show stable crystallization compared to PBAT pellets, while the thermal stability and mechanical properties of PBAT/HBP fibers depend on the HBP ratio. Importantly, the fibers transition from hydrophobic to super-hydrophilic with increasing HBP content, showing significant potential for biomedical applications.
Article
Polymer Science
Prathyusha Chimala, M. Mario Perera, Aissatou Wade, Tucker McKenzie, Joshua Allor, Neil Ayres
Summary: Hydrogels with the ability to repair damage or undergo controllable changes in stiffness and swelling are becoming increasingly important in various technologies. The use of hyperbranched polymers in gel preparation can lead to significant stiffness changes and enhanced healing behavior, showing potential for in vitro models studying cellular behavior with dynamic matrix changes.
Article
Materials Science, Multidisciplinary
Yu Feng, Yingchun Li, Xinming Ye, Zhimao Li, Wensheng Wang, Tong Liu, Islam H. El Azab, Gaber A. M. Mersal, Mohamed M. Ibrahim, Zeinhom M. El-Bahy, Mina Huang, Zhanhu Guo
Summary: Aliphatic-aromatic copolyesters were synthesized from sebacic acid, terephthalic acid, 1,4-butanediol, and 2,5-furandicarboxylic acid, and the addition of 2,5-furandicarboxylic acid improved the tensile strength, yield strength, and water vapor barrier of the copolyesters. Copolyesters with 6% of 2,5-furandicarboxylic acid showed the best comprehensive performance.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Polymer Science
Leonard Ionut Atanase, Slim Salhi, Oana Cucoveica, Marijana Ponjavic, Jasmina Nikodinovic-Runic, Christelle Delaite
Summary: Biodegradable polymers have great significance in biomedical applications as they can degrade in the body, eliminating the need for retrieval or explant. This study obtained a series of PCL-b-PEA-b-PCL block copolymers with varying PCL sequence lengths, and found that the presence of the PEA central sequence has an important influence on the biodegradability of the copolymer samples.
Article
Polymer Science
Yue Ding, Jingxi Wang, Congcong Luo, Bing Yao, Liming Dong, Xihua Du, Junhui Ji
Summary: This research introduced glycolic acid segments into PBS main unit to synthesize PBSGA copolymer with excellent mechanical properties and thermal stability. The degradation rate of PBSGA copolymer was found to be influenced by different factors in various solution environments.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Yue Ding, Shilin Li, Jingxi Wang, Yuanyuan Liu, Liming Dong, Xihua Du, Dan Huang, Tianhao Ai, Junhui Ji
Summary: This paper synthesized poly(butylene succinate-co-diethylene glycol succinate) (PBSD) copolymers to improve the nonenzymatic hydrolysis of poly(butylene succinate) (PBS). The results showed that the contact angle and water uptake of the copolymer increased significantly, indicating microphase separation occurred. PBSD copolymers exhibited high tensile strength, elongation at break, and decomposition temperature. The weight loss of PBSD copolymers was greater in acidic conditions compared to neutral conditions and simulated seawater. PBSD copolymers have the potential to be utilized as water degradable materials for environmental pollution control.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Yifan Jia, Zhiqiang Sun, Chenyang Hu, Xuan Pang
Summary: With the increasing demand for sustainable development, there is a growing interest in using natural biomass to produce sustainable polymers. To achieve better performance, block copolymers with wide tunability are synthesized. Switchable polymerization is a practical strategy to produce biodegradable block copolymers with diverse performance. This review focuses on the performance of block copolymers bearing biodegradable polymer segments produced by switchable polymerization.
Article
Chemistry, Applied
Fang Fang, Indraneil Mukherjee, Monika Okoniewska, Tianming Yao, Osvaldo H. Campanella, Bruce R. Hamaker
Summary: In this study, soluble corn arabinoxylan (CAX) was incorporated into cornmeal at a high level (25% w/w) and produced expanded extrudates with a comparable microstructure to cornmeal without added fibers. Wheat arabinoxylan (WAX) and long chain inulin-incorporated cornmeal extrudates had low degrees of expansion and high bulk density. The melt viscosities and thermal properties of the different extrudates were also analyzed.
FOOD HYDROCOLLOIDS
(2022)
