Article
Polymer Science
Qianqian Qi, Zhe Xiao, Yaowei Wang, Xinjin Yan, Peng Fu, Xiaomeng Zhang, Wei Zhao, Xinchang Pang, Minying Liu, Qingxiang Zhao, Zhe Cui
Summary: In this study, a series of novel silicone-containing polyamides were successfully synthesized, and their properties were regulated by the Si12 unit-content. The characterized chemical structure and physical properties revealed that the polyamides exhibited good elasticity, flame retardancy, and blue luminescence. These silicone-containing polyamides have promising application potential for high-performance polymeric materials.
Article
Materials Science, Multidisciplinary
Qiuquan Cai, Tianwen Bai, Hongjie Zhang, Xuxia Yao, Jun Ling, Weipu Zhu
Summary: Most commodity polyesters are traditionally synthesized using metallic catalysts, which can leave toxic residues. This study introduces a dynamic stoichiometric strategy to synthesize high molecular weight polyesters without the need for additional catalysts, providing a promising alternative with high safety requirements.
Article
Materials Science, Multidisciplinary
Xianliang Hou, Shun Yao, Zhen Wang, Changqing Fang, Tiehu Li
Summary: By assembling in-situ SiO2 nanoparticles on basalt fiber surfaces and treating with KH-550 coupling agent, the interfacial interaction of PLA/basalt fiber composites was effectively improved, leading to enhanced mechanical properties such as tensile strength, impact strength, and flexural strength.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Lan Guo, Yunsheng Xu, Xianming Zhang, Guo-Hua Hu
Summary: Nanoparticles are used to compatibilize immiscible polymer blends. Silica nanoparticles (SiO2) were used in this study to compatibilize polyamide 6 (PA6)/polycarbonate (PC) blends. The localization of SiO2 at the interfaces between PA6 and PC was achieved through grafting a methacrylic monomer onto SiO2 and copolymerizing it with styrene (St) and 3-isopropenyl-alpha,alpha'-dimethylbenzyl isocyanate (TMI). The presence of SiO2-PST significantly decreased the PC domain diameter and improved the mechanical properties of the PA6/PC blend.
Article
Pharmacology & Pharmacy
Radhakanta Ghosh, Yuvaraj Arun, Peter Siman, Abraham J. Domb
Summary: Polyanhydrides are synthesized by melt-polycondensation of diacid monomers and excess acetic anhydride to form stable polymers with controlled molecular weight. The synthesized aliphatic polyanhydrides have controllable molecular weight and low polydispersity, making them suitable for potential use as drug carriers. In vitro drug release studies show promising results for poly(sebacic acid) as a candidate for controlled drug delivery applications.
Article
Engineering, Environmental
Yunbo Tong, Yulin Wei, Han Zhang, Lin Wang, Lingling Li, Fangkun Xiao, Congjie Gao, Guiru Zhu
Summary: In this study, a high separation performance polyamide thin film nanocomposite reverse osmosis membrane was successfully fabricated by incorporating silica nanoparticles formed by in-situ polymerization of TMOS in the polyamide layer. The best performance membrane was prepared by mixing 0.8 wt% TMOS in the organic phase solution and interfacial polymerization for 2 minutes. The prepared TFN membrane showed significantly improved water flux and salt rejection compared to pure polyamide thin film composite membrane, while also demonstrating excellent anti-fouling and long-term stability performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Hao-Ran Zuo, Shu-Ya Pang, Ming Duan, Wei Su, Hang Shu, Xiang-Feng Xu
Summary: This study introduced a methodology to predict the structural performance of polyamide composite membranes by correcting the flux of monomers. By regulating the structure of the skin layer, a high-performance forward osmosis membrane was synthesized, breaking the historical upper boundary.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Polymer Science
Jie Wang, Jinjie Li, Noor ul ain Hira, Xiaowang Yu, Xuezheng Zhang, Yun Ding, Aiguo Hu
Summary: A size-controlled method has been used to synthesize soluble-conjugated polymeric nanoparticles (SCPNs) through cross-coupling polymerizations. Unlike traditional methods, this confined polymerization produced SCPNs with good yields, narrow particle size distribution, and high solubility in common organic solvents. The obtained SCPNs show various fluorescence emission and have promising applications in light-emission, fluorescence sensing, and bioimaging.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Applied
Yunfan Zhang, Jialin Liu, Jingbo Zhao, Zhiyuan Zhang
Summary: A new method was established to prepare polyamides with a chelating feature through Michael addition and polycondensation. N,N'-bis(methyl propanoate) piperazine (BMPZ) was synthesized via a Michael addition of piperazine and methyl acrylate, and then three PIP-PAs were synthesized with piperazine rings. The modified PIP-PAs showed good mechanical property and solvatochromic feature after chelation with Co2+.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Polymer Science
Yu-Hao Chen, Yun Chang, Syang-Peng Rwei
Summary: In this study, a novel crosslinked polyamide (cPA) system with hybrid polymer networks was developed by adjusting the reversible hydrogen bonds and permanent covalent crosslinks. A series of copolyamides were successfully synthesized and studied for their thermal, mechanical, and viscoelastic behavior. The best mechanical properties were found in the composition of BH37, which exhibited microcrystalline behavior and outstanding tensile properties. These studies provide useful information for designing novel cPA materials with controlled thermal and mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xu Zhang, Yong Chen, Mengting Ye, Jing Wu, Huaping Wang
Summary: In this study, a novel biodegradable polyester with high heat resistance and good crystallization capability was synthesized. The use of a green monomer resulted in blocky copolymers with tunable thermal properties. These polyesters have potential applications in various fields, such as fibers.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Polymer Science
Kuiyao Zhang, Kangjie Shuai, Zhongbin Ni, Tatsuo Kaneko, Weifu Dong, Mingqing Chen, Dongjian Shi
Summary: Non-isocyanate polyurethanes (NIPUs) with high overall performance and self-healing properties were synthesized through a solvent-free and ecologically friendly melt polycondensation route. NIPUs exhibited linear structures, high molecular weights, good thermal and mechanical properties, and the ability for self-healing and recyclability, showing great potential for industrialization.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Nawshad Akther, Yuqing Lin, Shengyao Wang, Sherub Phuntsho, Qiang Fu, Noreddine Ghaffour, Hideto Matsuyama, Ho Kyong Shon
Summary: The study demonstrated that growing an ultrathin hydrophilic silica layer on the PA surface can improve the antifouling property of TFC membranes without compromising membrane selectivity. The silica-modified TFC FO membranes displayed higher water flux and excellent stability under various cleaning conditions compared to pristine membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Chong Xu, Qin Zhou, Wei-Ya Huang, Kai Yang, Yong-Cai Zhang, Tong-Xiang Liang, Zhao-Qing Liu
Summary: A series of Z-scheme beta-Bi2O3/ZrO2 hetero-junction composites containing three-dimensional mesoporous silica nanospheres were synthesized as efficient catalysts for antibiotic remediation. The optimal sample showed high adsorptive-photocatalytic removal efficiency as well as improved visible-light adsorption capacity and separation of photogenerated electron-hole pairs. This study provides an efficient way to construct novel mesoporous ternary photocatalyst for treatment of antibiotics by synergistic adsorption and photocatalysis.
Article
Polymer Science
Pilar Bernal-Ortega, Rafal Anyszka, Yoshihiro Morishita, Raffaele di Ronza, Anke Blume
Summary: The main advantage of using silica instead of carbon black in rubber compounds lies in the use of a silane coupling agent to enhance compatibility between silica and rubber. There are two methods of modifying the silica surface with silane: ex-situ and in-situ. This study investigates the differences between these processes and their effect on the rubber properties of silica-filled SBR compounds.
