A Novel Absorptive Functional Fiber Copolymerized by Butyl Methacrylate with Hydroxyethyl Methacrylate: Preparation and Characterization

摘要

With benzoyl peroxide as initiator, BMA/HEMA copolymer was firstly synthesized by suspension polymerization, and then the functional fiber that could absorb organic matter was prepared by gelation-spinning, finally its corresponding characteristics were studied. The results analyzed by WAXD and TG showed that the crystallization ability of fiber is dependent on the mass fraction of HEMA; the higher the mass fraction of HEMA is, the weaker the crystallization ability. The investigation on swelling behavior showed that the absorbency for BMA homopolymer fiber decreases with increasing absorptive time, even the fiber can dissolve into organic matter. After HEMA was copolymerized with BMA, the absorbency increases as increasing absorptive time, but the absorbency for fiber with 5 wt% HEMA is lower than that for fiber with 10 wt% or 15 wt% HEMA at the same absorptive time. The remaining ratio and oil retention ratio increase with the increase of the mass fraction of HEMA. The result obtained by SEM showed that the surface morphology is also dependent on HEMA content; it becomes coarser with increasing HEMA content. In addition, DSC analysis indicated that less than a threshold of trichloroethylene absorbency, the trichloroethylene molecules absorbed in copolymer cannot construct crystals in the copolymer matrix; beyond this threshold, the absorbed trichloroethylene can construct crystals near −84°C and −110°C. FTIR analysis explained that the absorbed trichloroethylene forms hydrogen bonds with hydroxyls and ester groups in copolymer during the process of absorption.