材料科学与工程学报2024，Vol.42Issue(3)：427-434,8.DOI:10.14136/j.cnki.issn1673-2812.2024.03.010
酰肼成核剂对聚乳酸结晶和力学性能的影响
Effects of Hydrazide Nucleating Agents on Crystallization and Mechanical Properties of Polylactic Acid
摘要
Abstract
In order to improve the crystallinity and toughness of polylactic acid(PLA),two nucleating agents of diphenyl adipate hydrazide(SDA210)and diphenyl sebacate hydrazide(SDA356)were added into PLA by melt blending.The effects of two nucleating agents on the crystallization and mechanical properties of PLA were investigated by differential scanning calorimeter,X-ray diffractometer and polarization microscope.The results showed that both SDA210 and SDA356 are effective nucleating agents for PLA.When the dosage of SDA210 was 1.0%,the nucleation effect of PLA was the best,and the crystallinity of SDA210 was 10.21%higher than that of pure PLA.The nucleation effect of SDA356 was the best when 0.8%dosage was added,and its crystallinity was 12.57%higher than that of pure PLA.Both nucleating agents could improve the impact properties of polylactic acid composites.PLA/0.8%SDA356 had the best no-notched impact strength,reaching 170.08J/M,which was 31.3%higher than that of pure PLA.The nucleation and toughening effects of the nucleating agent SDA356 were better than those of SDA210 under the same dosage.关键词
聚乳酸/酰肼成核剂/结晶/韧性Key words
Polylactic acid/Hydrazide nucleating agent/Crystallization/Toughness分类
通用工业技术引用本文复制引用
张靖倩,曾广胜,彭军,胡灿,孟聪,李玲,郑和淇..酰肼成核剂对聚乳酸结晶和力学性能的影响[J].材料科学与工程学报,2024,42(3):427-434,8.基金项目
国家自然科学基金面上资助项目(52173034,51973056) （52173034,51973056）
湖南省自然科学基金资助项目(2021JJ50031,2021JJ50009,2020NK2035,2020JJ6074) （2021JJ50031,2021JJ50009,2020NK2035,2020JJ6074）
湖南省科技创新资助项目(2021RC4065) （2021RC4065）
