采用DSC方法研究了3,3’-双叠氮甲基环氧丁烷-3-叠氮甲基-3’-甲基环氧丁烷(BAMO-AMMO)三嵌段共聚物的相分离程度,根据Scherrer公式和Bragg方程计算了pBAMO均聚物和BAMO-AMMO三嵌段共聚物的微晶尺寸和晶面间距,利用XRD比较了两者的结晶度.结果表明,BAMO-AMMO三嵌段共聚物形成了软硬段的相分离,相分离程度为79.45％,具有热塑性弹性体的性质；pBA MO均聚物的结晶度为80.30％,BAMO-AMMO三嵌段共聚物中BAMO链段的结晶度为74.81％.由于部分软硬段之间的互溶,导致了三嵌段共聚物玻璃化转变温度的升高以及结晶度的降低.%Phase segregation degree of 3, 3'-bisazidomethyloxetane-3-azidomethyl-3'-methyloxetane (BAMOAM-MO) tri-block copolymer was investigated by DSC. Grain size and interplanar spacing of pBAMO homopolymer and BAMO-AMMO tri-block copolymer were calculated using Scherrer and Bragg equation. Crystallinity of pBAMO homopolymer and BAMO-AMMO tri-block copolymer was compared through XRD patterns. The results show that apparent phase segregation of soft and hard seqments exists in BAMO-AMMO tri-block copolymer. The copolymer exhibites thermoplastic elastomer characteristics. The degree of phase segregation is 79. 45%. Crystallinity of BAMO segment in copolymer is 74. 81%, compared with 80. 30% of pBAMO homopolymer. Increase in glass transition temperature and decrease in crystallinity of tri-block copolymer are caused by partly miscible between soft and hard segments.
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