Journal
JOURNAL OF POLYMER RESEARCH
Volume 28, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1007/s10965-021-02460-x
Keywords
Poly(butylene succinate-co-propylene succinate); Copolymer; Glycerol; Crosslinked
Categories
Funding
- Ministry of Science and Technology of Taiwan [MOST 109-2634-F-027-001, MOST 109-2622-E-027-004 -CC3, MOST 109-2221-E-027 -114 -MY3]
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Isothermal and nonisothermal crystallization kinetics studies showed that a small amount of glycerol can enhance the crystallization rate and relative crystallinity of PBSPS copolymers, while excessive glycerol can restrict the movement of molecular chains and decrease the relative crystallinity.
Isothermal crystallization kinetics are performed in poly(butylene succinate-co-propylene succinate) (PBSPS) in a BS/PS ratio of 10/0(PBS) to 7/3 with 0 and 0.02 mol% glycerol, indicating PBSPS copolymers are 3D growths initiated by heterogeneous nucleation. Crystallization growth rates of BS/PS = 10/0(PBS) to 7/3 with 0.02 mol% glycerol are faster than with 0 mol% glycerol, for a given temperature range. Nonisothermal crystallization kinetics are performed to clarify the effects of different glycerol proportions for BS/PS = 7/3. The 0.01 mol% glycerol is used to form a nucleation site, in which the kinetic energy of the molecular chain can be driven to increase the packing ability. When glycerol is increased to 0.02 mol%, the restriction of the glycerol on the movement of the molecular chain becomes more extensive to decrease the relative crystallinity. Hence, a small amount of glycerol content can improve the relative crystallinity and crystallization rate of PBSPS copolymer.
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