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Chain extender

2015-09-19 22:02:30   Source:    Views:


The recycled polyester or polyamide materials often degrade seriously by many times shearing or thermal history, which leads to broad molecular weight distribution. SAG-008 has a high concentration of epoxy groups, which can react with the terminal groups of the recycled polyester or polyamide to prevent further degradation, increasing the melt viscosity and improving processing stability.



PLA and PBS are biodegradable materials, contain lots of –COOH and –OH, which can promote degradation in the condition of heat or shear. The epoxy groups in SAG-008 can react with –COOH and –OH, restrain degradation. Meanwhile,SAG-008 can act as chain extender because one SAG-008 molecule contains numbers of epoxy groups.

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