The glass transition temperature(Tg) of HBPS-1, HBPS-2 and HBPS-3 were studied by DSC.

• 示差扫描量热法(DSC)的分析结果表明：HBPS-1、HBPS-2、HBPS-3的玻璃化转变温度按顺序降低，且均低于线形聚苯乙烯的玻璃化转变温度；