增塑剂
材料科学
聚合物
醋酸纤维素
降级(电信)
脆化
纤维素
化学工程
复合材料
计算机科学
电信
工程类
作者
Alessandro Bonifacio,Lorenzo Bonetti,Etienne Piantanida,Luigi De Nardo
标识
DOI:10.1016/j.eurpolymj.2023.112360
摘要
Plasticized cellulose acetate (CA) is one of the most applied bio-based polymers due to its structural properties and easy processing. Plasticizers are added to CA to increase workability, prevent degradation under processing conditions and ensure thermo-mechanical properties suitable for the intended final application. Moreover, inexpensive and non-toxic solvents enable its processing into fibers, films, and solid blocks. However, when incorporated in the polymer matrix, plasticizers are prone to migration. CA products can suffer embrittlement, cracking, warping, or discoloration during their life cycle, affecting the material's integrity and durability. The design of new plasticizers compatible with the polymer at high concentrations, tailored to be effective in lowering the glass transition temperature, and with a low tendency to migration could considerably reduce material degradation over time. This review offers a perspective on the current plasticizers and comprehensively depicts the plasticization mechanisms in CA for internal and external plasticization. Understanding the plasticization mechanisms paves the way to identify a rationale for designing new plasticizers for this polymer.
科研通智能强力驱动
Strongly Powered by AbleSci AI