Macromolecular Engineering and Additive Manufacturing of Polyisobutylene‐Based Thermoplastic Elastomers. II. The Poly(styrene‐ b ‐isobutylene‐ b ‐styrene)/Poly(phenylene oxide) System
Macromolecular Engineering and Additive Manufacturing of Polyisobutylene‐Based Thermoplastic Elastomers. II. The Poly(styrene‐ b ‐isobutylene‐ b ‐styrene)/Poly(phenylene oxide) System
复制标题
聚异丁烯基热塑性弹性体的高分子工程和增材制造。
DOI：
10.1002/marc.202200109
复制
发表时间：
2022
影响因子：
4.6
通讯作者：
Xu, Weinan
中科院分区：
文献类型：
--
作者：
Shen, Naifu;Bu, Jinyu;Prévôt, Marianne E.;Hegmann, Torsten;Kennedy, Joseph P.;Xu, Weinan
本系列出版物介绍了软聚异丁烯(PIB)基热塑性弹性体通过与硬质化学兼容热塑性塑料共混进行3D打印的研究。系统地研究了这种共混物的分子结构、形态、物理性能和3D打印性能。作者的第一份报告涉及软性聚(苯乙烯-b-异丁烯-b-苯乙烯)(SIBS)的渲染，通过与刚性聚苯乙烯(PS)的共混来实现3D打印。在这里，他们报告了用于3D打印的SIBS/聚苯醚(PPO)共混物的高分子工程。PPO是一种硬质高性能热塑性塑料，与SIBS中的硬质PS块兼容，但PPO和SIBS都不能直接进行3D打印。通过控制共混比和相对分子质量，系统地调节了SIBS/PPO共混物的微相分离结构和物理性能。优化了适用于3D打印的SIBS/PPO共混物的组成范围和所需的性能。用原子力显微镜、小角X射线散射、热性能和力学性能测试等手段对SIBS/PPO共混物的形态和性能进行了表征。阐明SIBS/PPO共混物的加工-结构-性能关系对于3D打印和高性能聚合物体系的先进制造是至关重要的。
This series of publications describes research rendering soft polyisobutylene (PIB)‐based thermoplastic elastomers 3D printable by blending with rigid chemically compatible thermoplastics. The molecular structure, morphology, physical properties, and 3D printability of such blends have been systematically investigated. The authors' first report was concerned with the rendering of soft poly(styrene‐b‐isobutylene‐b‐styrene) (SIBS) 3D printable by blending with rigid polystyrene (PS). Here they report the macromolecular engineering of SIBS/polyphenylene oxide (PPO) blends for 3D printing. PPO, a rigid high‐performance thermoplastic, is compatible with the hard PS block in SIBS; however, neither PPO nor SIBS can be directly 3D printed. The microphase‐separated structures and physical properties of SIBS/PPO blends are systematically tuned by controlling blending ratios and molecular weights. Suitable composition ranges and desirable properties of SIBS/PPO blends for 3D printing are optimized. The morphology and properties of SIBS/PPO blends are characterized by an ensemble of techniques, including atomic force microscopy, small‐angle X‐ray scattering, and thermal and mechanical properties testing. The elucidation of processing‐structure‐property relationship of SIBS/PPO blends is essential for 3D printing and advanced manufacturing of high‐performance polymer systems.