Synthesis and Properties of Poly(butylene carbonate-co-spirocyclic carbonate)

• 来源期刊: 高等学校化学研究（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 729-734
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s40242-019-8355-7

摘要

Poly(butylene carbonate)(PBC) has significantly promising applications as a degradable material in the field of polymers,while its poor thermal performance and low crystallization rate are its main defects.To overcome these shortcomings,a series of poly(butylene carbonate-co-spirocyclic carbonate)(PBSC) copolymers were synthesized from diphenyl carbonate,1,4-butanediol and spiroglycol via two-step polycondensation reactions,using magnesium oxide as a catalyst.Differential scanning calorimetry(DSC) results indicated that the glass transition temperature(Tg) values of PBSC copolymers were enhanced from-19 ℃ to 56 ℃ with rising the spiroacetal moiety content.Thermogravimetric analysis(TGA) results showed that the resulting PBSCs have a higher thermal stability than that of poly(butylene carbonate).Wide angle X-ray diffraction(WXRD) patterns were characterized to investigate the crystallization behaviour of PBSCs.Tensile testing demonstrated that copolymerization of spiroacetal moieties into PBC chains imparted PBSC with favourable mechanical performance.Typically,PBSC30 had a tensile modulus of (1735±430) MPa,a tensile strength of (42±5) MPa and an elongation of 504％±36％.