生物降解淀粉基塑料老化性能研究综述

Review on Study of Aging Properties of Biodegradable Starch Based Plastics

根据现阶段确定的生物降解塑料降解定义和降解步骤,以及淀粉基塑料原料对淀粉基塑料断裂伸长率、拉伸强度和直角撕裂强度影响等方面,综述生物降解淀粉基塑料老化性能。阐述了淀粉基塑料老化性能的研究方法;选取具有代表性的研究成果,综述了淀粉基塑料在表面褪色、产生裂痕、脆化、拉伸强度和拉伸率降低、内部结构分子链断裂等方面的老化性能影响。

The aging properties of biodegradable starch based plastics were reviewed according to the degradation definition and degradation steps of biodegradable plastics determined at the present stage, and the effects of starch based plastics raw materials on elongation at break, tensile strength and right angle tear strength of starch based plastics. The research methods of aging properties of starch based plastics are comprehensively analyzed;Selecting representative research results, this paper summarizes the aging properties of starch based plastics from the aspects of plastic surface fading, crack, embrittlement, reduction of tensile strength and tensile rate, internal structure molecular chain fracture and so on.