文献类型：期刊文献

英文题名：Crystallization and Properties of Poly(lactide)/Poly(δ-valerolactone) Alternating Supramolecular Copolymers Adjusted by Stereocomplexation

作者：Shi, Xuetao[1];Jing, Zhanxin[2];Zhang, Guangcheng[1]

机构：[1]Northwestern Polytech Univ, Sch Nat & Appl Sci, Dept Appl Chem, Xian 710129, Shaanxi, Peoples R China;[2]Guangdong Ocean Univ, Dept Appl Chem, Zhanjiang 524088, Peoples R China

年份：2019

卷号：4

期号：6

起止页码：11145

外文期刊名：ACS OMEGA

收录：SCI-EXPANDED(收录号：WOS:000473361500178)、、Scopus(收录号：2-s2.0-85068194474)、WOS

基金：This work is funded by the Fundamental Research Funds for the Central Universities (No. 3102018jcc006).

语种：英文

外文摘要：The crystallization behavior of a series of synthesized polylactide (PLA)/poly(delta-valerolactone) (PVL) supramolecular copolymers with 2-ureido-4[1H]-pyrimidinone (UPy) groups is investigated by differential scanning calorimetry and X-ray diffraction. The stereocomplexation of PLA-based supramolecular polymers (SMPs) is strongly related to the block length, L/D ratios, and the UPy groups. Both the increase of the PLA block length and the self-complementary hydrogen bonding of the UPy end groups restrain the crystallization of the PVL blocks. The stereocomplexation of PLA-SMPs is greatly promoted by UPy groups, while the homocrystallization of PLA is constrained. The dynamic mechanical analysis indicated that the enhanced stereocomplexation would lead to higher thermal resistance and mechanical properties of PLA-based SMPs.