Foamable low-modulus thermoplastic compositions are prepared by incorporating suitable chemical blowing agents in low-modulus polymers. Specifically, low-modulus copolyetherester compositions may be foamed by use of citric acid, sodium bicarbonate or mixtures thereof as blowing agents.
                            通过在低模量聚合物中加入适当的
化学发泡剂,可制备可发泡的低模量热塑性塑料组合物。具体来说,低模量共聚醚酯组合物可以通过使用
柠檬酸、
碳酸氢钠或它们的混合物作为发泡剂来发泡。