Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session B52: Polymer Crystallization from Classical to Functional Systems II
11:15 AM–2:15 PM,
Monday, March 5, 2018
LACC
Room: 512
Sponsoring
Unit:
DPOLY
Chair: Christopher Li, Drexel Univ
Abstract ID: BAPS.2018.MAR.B52.13
Abstract: B52.00013 : Study of Molecular Weight Effects on Crystallization Kinetics of Enantiomeric Poly(lactic acid) Blends via Flash DSC Measurement*
2:03 PM–2:15 PM
Abstract
Presenter:
He Yucheng
(State Key Laboratory of Coordinate Chemistry, School of Chemistry and Chemical Engineering, Nanjing Univ)
Authors:
He Yucheng
(State Key Laboratory of Coordinate Chemistry, School of Chemistry and Chemical Engineering, Nanjing Univ)
Pengju Pan
(State Key Laboratory of Chemical Engineering, College of Biological and Chemical Engineering, Zhejiang University)
Jiping Wang
(State Key Laboratory of Coordinate Chemistry, School of Chemistry and Chemical Engineering, Nanjing Univ)
Wenbing Hu
(State Key Laboratory of Coordinate Chemistry, School of Chemistry and Chemical Engineering, Nanjing Univ)
We employed the commercial chip-calorimeter Flash DSC 1 to measure the temperature dependence of crystallization rates of enantiomeric Poly(lactic acid) blends with various molecular weights. [1，2] The results show that crystallization kinetics of stereocomplex crystals and homo-crystals are competitive, and separately dominant at low and high molecular weights. In the middle molecular weights, the mixture of two crystals can be identified with the help of IR spectroscopy. Furthermore, we confirmed that the hydrogen bonding interactions are formed more easily in low molecular weight blends,[3]inducing significantly stereocomplex crystal nucleation.
*This work is supported by National Natural Science Foundation of China (Grant No. 21474050 and 21734005)
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.B52.13
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