教師資料查詢 | 類別: 期刊論文 | 教師: 賴偉淇 Lai,Wei-chi (瀏覽個人網頁)

標題:Effects of self-assembled sorbitol-derived compounds on the structures and properties of biodegradable poly (L-lactic acid) prepared by melt blending
學年107
學期1
出版(發表)日期2019/01/01
作品名稱Effects of self-assembled sorbitol-derived compounds on the structures and properties of biodegradable poly (L-lactic acid) prepared by melt blending
作品名稱(其他語言)
著者Wei-Chi Lai; Yu-Chen Lee
單位
出版者
著錄名稱、卷期、頁數Journal of Polymer Research 26(1), 10
摘要The microstructures and characteristics of biodegradable poly(L-lactic acid) (PLLA) with 1,3:2,4-dibenzylidene-D-sorbitol (DBS) prepared by melt blending were investigated in this study. DBS was added as a diluent to PLLA in the melted state, leading to the disentanglement of PLLA chains and the enhancement of PLLA mobility. Upon cooling from the melt, the formation of self-assembled DBS nanofibrils enhanced the hardness and stiffness of PLLA. DBS nanofibrils were measured with diameters of 40–50 nm, as observed using scanning electron microscopy (SEM). In addition, the thermal and crystallization behaviors of PLLA were significantly influenced by the addition of DBS. The ordered and regular α-crystals of PLLA were favored when DBS was added. The crystallization rates of PLLA are tunable by varying the isothermal crystallization temperatures of PLLA and the amounts of DBS. The presence of DBS interfered with the crystallization rates of PLLA. However, at higher crystallization temperatures of PLLA, DBS facilitated the formation of nuclei, leading to an increase in the crystallization rates of PLLA. Furthermore, the hydrophilicity of PLLA was significantly improved by a further increase in DBS concentration.
關鍵字PLLA;Self-assembled;Nanofibrils;Hydrophilicity
語言英文
ISSN1022-9760
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別荷蘭
公開徵稿
出版型式,電子版
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