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Poly(lactide) stereocomplex (PLA SC) and poly(ethylene glycol) (PEG) crystallites were obtained in MPEG-b-PLLA/MPEG-b-PDLA (linear blend, 1/1) and 4PEG-b-PLLA/4PEG-b-PDLA (4-arm blend, 1/1) by solution-casting method. The molecular weights of PLLA and PDLA (Mn, PLA) were similar in all the linear and 4-arm blends. Only PLA SC and PEG crystallites were observed, and PLA homocrystallites were absent...
In this study, the poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) blends with different optical purities of PLLA and various molecular weights of PDLA are prepared by solution mixing, and the stereocomplex formation and phase separation behaviors of these blends are investigated. Results reveal that optical purity and molecular weight do not vary the crystal structure of PLA stereocomplex (sc) and homochiral...
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