Preparation and properties of high melt strength PBS and its environmentally friendly foaming materials

In order to improve the melt strength of Poly(butylene succinate) (PBS) resin, the silane graft-crosslinked PBS copolyester materials were prepared by melt blending method with vinyltriethyl silane as graft material and benzyl peroxide (BPO) as initiator. At the same time, the environmentally friend...

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Bibliographic Details
Published in:Cellular polymers 2022-01, Vol.41 (1), p.30-38
Main Authors: Zhou, Xiao-Ming, Liu, Yi-Fan
Format: Article
Language:English
Subjects:
Acids
Addition polymerization
Citric acid
Crosslinking
Decomposition
Diameters
Elasticity
Foaming agents
Grafting
Melt blending
Polyethylene
Polymer melts
Polymers
Reagents
Resins
Rheology
Silanes
Sodium
Sodium bicarbonate
Tensile properties
Viscosity
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Summary:In order to improve the melt strength of Poly(butylene succinate) (PBS) resin, the silane graft-crosslinked PBS copolyester materials were prepared by melt blending method with vinyltriethyl silane as graft material and benzyl peroxide (BPO) as initiator. At the same time, the environmentally friendly compound foaming agent (citric acid and sodium bicarbonate) was used as foaming agent. The results showed that the tensile properties and melt strength of PBS resin were greatly improved after silane grafting and cross-linking, and the graft and cross-linking reaction between PBS resin and silane occurred, forming a three-dimensional space network structure, and the viscosity and elasticity of polymer melt was changed, which increased the entropy elasticity of the material and strengthened the polymer melt strength. The additional amount of compound foaming agent and the cross-linking degree of material had important influence on the diameter and distribution of PBS foaming material.
ISSN:0262-4893
1478-2421
DOI:10.1177/02624893211053674