Polypropylene glycol-polyoxytetramethylene glycol multiblock copolymers with high molecular weight: Synthesis, characterization, and silanization

2Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

Abstract

The high crystallization at room temperature and high cost of polyoxytetramethylene glycol (PTMG) have become obstacles to its application. To overcome these problems, a segment of PTMG can be incorporated into a block copolymer. In this work, polypropylene (PPO) glycol-polyoxytetramethylene (PPO-PTMG) multiblock copolymers were designed and synthesized through a chain extension between hydroxyl (OH)-terminated PPO and PTMG oligomers. The chain extenders, feed ratios of the catalyst/chain extender/OH groups, reaction temperature, and time were optimized several times to obtain a PPO-PTMG with low crystallization and high molecular weight. Multiblock copolymers with low crystallization and high average molecular weight (Mn = 1.0-1.4 × 104 Dalton) were harvested using m-phthaloyl chloride as the chain extender. The OH-terminated PPO-PTMG multiblock copolymer with high Mn and a functionality near two was further siliconized by 3-isocyanatopropyltrimethoxysilane to synthesize a novel silyl-terminated polyether. This polyether has an appropriate vulcanizing property and potential applications in sealants/adhesive fields.

Cite

CITATION STYLE

APA

Hu, W., Wang, L., Wang, Q., Luan, A., Mai, Y., Huang, L., … Xiong, W. (2019). Polypropylene glycol-polyoxytetramethylene glycol multiblock copolymers with high molecular weight: Synthesis, characterization, and silanization. Molecules, 24(23). https://doi.org/10.3390/molecules24234317

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free