Synthesis of Poly[(vinyl chloride)- co -(vinyl polydimethylsiloxane)] via Precipitation Polymerization and Its Lubrication Behavior in the PVC Matrix

作者：Yixiang Chen, Yunhui Cai, Changtong Song, Xianhong Zhang, Dong Chen, Wantai Yang · 发表于：ACS Applied Polymer Materials · 年份：2024 · DOI：10.1021/acsapm.4c00256 · 被引用次数：8 · 研究领域：Marine Biology and Environmental Chemistry、Advanced Polymer Synthesis and Characterization、Polymer Science and PVC

Poly(vinyl chloride) (PVC) is a widely used conventional thermal plastic, mainly attributed to its superiority in cost and versatility. However, the lack of functional properties restrained its further use in some specific application scenarios. In this work, we conducted the precipitation copolymerization of the vinyl chloride monomer with vinyl polydimethylsiloxane (VPDMS) in a nonaqueous medium ( n -hexane), aiming to prepare multifunctional and high-value-added PVC-based copolymers. The characterizations such as Fourier infrared spectroscopy, nuclear magnetic resonance spectroscopy ( 1 H NMR and 13 C NMR), X-ray photoelectron spectroscopy, scanning electron microscopy images, and gel permeation chromatography results demonstrated that the P[(VC)- co -(VPDMS)] binary copolymers with submicron nanoparticles (300–700 nm) and a low number-average molecular weight ( M n ∼ 20,000 g/mol) were successfully synthesized. A series of P[(VC)- co -(VPDMS) x ] ( x = 1.7, 2.4, 3.5, and 4.2) with varied mass fraction of VPDMS in the copolymer can be achieved by tuning the monomer feed ratio. Due to the low surface energy of VPDMS, all the P[(VC)- co -(VPDMS)] films exhibited a high water contact angle over 108° and outstanding surface antifouling behavior. By utilizing P[(VC)- co -(VPDMS)] as a polymeric lubricant in a rigid PVC matrix, they exhibited excellent results from internal to external with the increase of the mass fraction of VPDMS in the copolymer. Ultraviolet–visible (UV–vis)...