Citation:
Ying-ying Pan a, b, Xi-fei Yu a, Tong-fei Shi a, Li-jia An a. NUCLEATION AND CRYSTALLIZATION OF H-SHAPED (PS)2PEG(PS)2 BLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science,
2010, 28(3): 347-355.
doi:
10.1007/s10118-010-9025-x
NUCLEATION AND CRYSTALLIZATION OF H-SHAPED (PS)2PEG(PS)2 BLOCK COPOLYMERS
摘要:
A series of H-shaped (PS)2PEG(PS)2 block copolymers with different PS chain lengths were prepared. The influence of different confinements active on the crystallization and self-nucleation (SN) behavior of the PEG blocks was investigated by differential scanning calorimetry (DSC). When the content of the crystalline block was high, a classical SN behavior was obtained. The block copolymer with PEG content of 49% (by weight) showed a classical SN behavior with a narrow self-nucleation domain and had bimodal crystallization exotherms. When the PEG dispersed as separated microdomains in the block copolymer, the self-nucleation domain disappeared and only annealing was observed.
English
NUCLEATION AND CRYSTALLIZATION OF H-SHAPED (PS)2PEG(PS)2 BLOCK COPOLYMERS
Abstract:
A series of H-shaped (PS)2PEG(PS)2 block copolymers with different PS chain lengths were prepared. The influence of different confinements active on the crystallization and self-nucleation (SN) behavior of the PEG blocks was investigated by differential scanning calorimetry (DSC). When the content of the crystalline block was high, a classical SN behavior was obtained. The block copolymer with PEG content of 49% (by weight) showed a classical SN behavior with a narrow self-nucleation domain and had bimodal crystallization exotherms. When the PEG dispersed as separated microdomains in the block copolymer, the self-nucleation domain disappeared and only annealing was observed.
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