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Citation: An Yuxian, Dong Lisong, Xing Peixiang, Zhuang Yugang, Mo Zhishen, Feng Zhiliu. Miscibility and Crystallization Behaviour of Poly(β-Hydroxybutyrate)/Poly(Vinyl Acetate) Blends[J]. Chinese Journal of Applied Chemistry, ;1996, 13(6): 42-45. shu

Miscibility and Crystallization Behaviour of Poly(β-Hydroxybutyrate)/Poly(Vinyl Acetate) Blends

1.
Polymer Physics Laboratory, Changchun institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022

Received Date: 11 March 1996
Available Online: 5 June 1996
Fund Project:

The miscibility and crystallization behaviour of poly(β-hydroxybutyrate)(PHB)/poly(vinyl acetate)(PVAc) blends,obtained by solution blend with cholroform as solvent,have been investigated using differential scanning calorimetry, polarizing microscopy and small-angle X-ray scattering.It is found that PHB is immiscible with PVAc in such cast film form.The addition of PVAc has no effect on the crystallinity of PHB phase in this case.However,when quenched from the melt,the system is miscible.The addition of PVAc not only affects the crystallinity,but also the cold crystallization peak temperature,isothermal crystallization rate and the structure of its spherulites.
- poly(β-hydroxybutyrate),
- poly(vinyl acetate),
- miscibility,
- crystallization behaviour
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