Abstract
Phase segregation degree of 3,3'-bisazidomethyloxetane-3-azidomethyl-3- methyloxetane (BAMO-AM-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.
| Original language | English |
|---|---|
| Pages (from-to) | 5-8 |
| Number of pages | 4 |
| Journal | Huozhayao Xuebao/Chinese Journal of Explosives and Propellants |
| Volume | 34 |
| Issue number | 5 |
| Publication status | Published - 2011 |
Keywords
- BAMO-AMMO tri-block copolymer
- Crystal structure
- Phase segregation
- Physical chemistry