Aiming at improving the flexibility of polymer films, the copolymers of perfluoro(2-methylene-4-methyl-1,3-dioxolane) (PFMMD) and chlorotrifluoroethylene (CTFE) with different compositions were prepared by radical polymerization using perfluorobenzoyl peroxide (PFBP) as the initiator, and their thermal, mechanical, and optical characteristics were investigated. These copolymers are amorphous, soluble in fluorinated solvents, with glass transition temperatures (T_gs) in the range of 100–135 °C, and thermally stable to near 400 °C. Stress-strain curves of polymer films were obtained and tensile strength as well as Young’s modulus were calculated. Film flexibility and elongation are improved with increasing fraction of CTFE in the copolymers. The copolymer films have low refractive indices (1.33–1.40) and exhibit extraordinary optical transmittance within the visible and near-infrared regions. The copolymers are promising materials for applications including plastic optical fibers, waveguides, and anti-reflective coating.

为了提高聚合物薄膜的柔韧性，采用全氟过氧化苯甲酰（PFBP）进行自由基聚合，制备了不同组成的全氟（2-亚甲基-4-甲基-1,3-二氧戊环）（PFMMD）和三氟氯乙烯（CTFE）的共聚物。作为引发剂，对其热，机械和光学特性进行了研究。这些共聚物是无定形的，可溶于氟化溶剂，具有玻璃化转变温度（T _gs）在100–135°C的范围内，并且热稳定至接近400°C。获得了聚合物薄膜的应力-应变曲线，并计算了拉伸强度以及杨氏模量。膜的柔韧性和伸长率随共聚物中CTFE分数的增加而提高。共聚物膜的折射率低（1.33-1.40），并且在可见光和近红外区域显示出非凡的光学透射率。共聚物是用于塑料光纤，波导和抗反射涂层等应用的有前途的材料。