DataVXACS Applied Materials & InterfacesPaper
journal article·2024-07-03

Self-Generation of a Nanofibrous Structure Enables Facile Preparation and Processing of a Liquid Crystalline Polymeric Composite with Intrinsic Flame Retardancy

Jiaxin Liu, Yang Wu, Tao Peng, Chengxin Guo, Yaxuan Zheng, Li Han, Ping Liu, Yaozhong Zhuang, Xingqi Hu, Mingang Yao, Qingbao Guan, Zhengwei You

ACS Applied Materials & Interfaces· Volume 16· Issue 26
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Source abstract

Abstract

Thermotropic liquid crystalline polymers (TLCPs) usually act as reinforcement to prepare composites; however, poor interfacial adhesion between two materials leads to restricted enhancement in performance. Although adding a flame retardant is an effective method to extend the application fields of composites, it results in serious phase separation. To address the above challenges, a new strategy to design high-performance in-situ-reinforced composites with intrinsic flame retardancy is presented in this work. A naphthalene monomer with a kinked structure reduces the regularity of molecular chains, which improves the processability and forms a relatively flexible polymer bulk. The rest of the domains are more rigid and peculiarly form nanofiber reinforcement. The resultant composites possess high glass transition temperature ( T g > 200 °C), excellent processability (minimum complex melt viscosity ∼6.4 × 10 3 Pa·s), and great intrinsic flame retardancy. This would be an effective solution to reconcile the contradictory processability, phase separation, and flame retardancy of composites.
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Research context

PolymersCeramics & glassesNanomaterialsComposites

OpenAlex topics: Liquid Crystal Research Advancements · Synthesis and properties of polymers · Flame retardant materials and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, College of Materials Science and Engineering, Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society), Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China

Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China

High-Tech Organic Fibers Key Laboratory of Sichuan Province, Chengdu 610042, China

Shanghai Lidao New Materials Technology Co., Ltd., Shanghai 216013, China

State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China

Xinfengming Group Co., Ltd., Tongxiang 314513, China

Funding

Natural Science Foundation of Shanghai Municipality · National Key Research and Development Program of China · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Shanghai Rising-Star Program · High-Tech Organic Fibers Key Laboratory of Sichuan Province, Sichuan Textile Scientific Research Institute

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