Functionalized Polyesters with Tunable Degradability Prepared by Controlled Ring-Opening (Co)polymerization of Lactones
发表时间：2019-03-12
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- 论文类型：
- 期刊论文
- 第一作者：
- Xu, Yue-Chao
- 通讯作者：
- Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, 2 Linggong Rd, Dalian 116024, Peoples R China.
- 合写作者：
- Ren, Wei-Min,Zhou, Hui,Gu, Ge-Ge,Lu, Xiao-Bing
- 发表时间：
- 2017-04-25
- 发表刊物：
- MACROMOLECULES
- 收录刊物：
- SCIE、EI
- 文献类型：
- J
- 卷号：
- 50
- 期号：
- 8
- 页面范围：
- 3131-3142
- ISSN号：
- 0024-9297
- 摘要：
- Various well-defined diblock copolymers with poly(alpha-methylene beta-butyrolactone) (PM beta BL) segment were prepared by salen aluminum complexes or aminoalkoxybis(phenolate)yttrium amido complex mediated living ring-opening polymerization of racemic alpha-methylene-beta-butyrolactone (rac-M beta BL) and different lactones via one-pot, two-step method. These diblock copolymers all consist of semicrystalline and amorphous segments, possessing both a melting point and a glass transition temperature. With the use of simple salenAlMe with bulky (tert-butyldimethylsilyl) groups on the phenolate ortho position as catalyst in conjunction with equivalent benzyl alcohol, M beta BL and beta-butyrolactone (BL) have nearly identical reactivity in their copolymerization, affording the copolymers P(M beta BL-ran-BL) with random distributions of the two monomers. Notably, these copolymers exhibited tunable degradability in the presence of Lewis base, dependent on the M beta BL unit content in the random copolymers. Moreover, the vinylidene groups in P(M(beta)BLzran-BL) copolymers could be further functionalized through radical initiated cross-linking reactions and thiol-ene click chemistry, producing functionalized and cross-linking polymers with enhanced thermal property. These strategies will provide enormous possibilities to synthesize diverse well-defined block and random copolymers with designable segments or functional groups.
- 是否译文：
- 否
