Green and Facile Preparation of Readily Dual-Recyclable Thermosetting Polymers with Superior Stability Based on Asymmetric Acetal

doi:10.1021/acs.macromol.9b02386

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Green and Facile Preparation of Readily Dual-Recyclable Thermosetting Polymers with Superior Stability Based on Asymmetric Acetal
	Li, Qiong; Ma, Songqi; Wang, Sheng; Liu, Yanlin; Abu Taher, Muhammad; Wang, Binbo; Huang, Kaifeng; Xu, Xiwei; Han, Yingying; Zhu, Jin
刊名	MACROMOLECULES
	2020
卷号	53 期号:4 页码:1474-1485
关键词	COVALENT ADAPTABLE NETWORKS HIGHLY MALLEABLE THERMOSETS HIGH-PERFORMANCE DEGRADABLE THERMOSETS VITRIMERS TRANSALKYLATION LINKAGES MONOMER WASTE STEP
DOI	10.1021/acs.macromol.9b02386
英文摘要	Recycling thermosets have become extremely important due to their ecological and economic benefits. The development of thermosets that undergo reversible polymerization provides a solution to the end-life disposal issue of thermosetting materials. However, the synthesis and recycling of the current chemically recyclable thermosets are harsh, complex, and energy-intensive, and their stability is often low. Here, we designed asymmetric acetal-containing thermosets (PRCs) from general phenolic resin and 1,4-cyclohexanedimethanol divinyl ether through one-step "click" cross-linking without using catalysts and solvents and without releasing small-molecule byproducts. PRCs exhibited conspicuous stress relaxation via a dissociative mechanism, corresponding to the superior malleability and reprocess recyclability. Importantly, PRCs presented excellent creep resistance even at 100 degrees C. In addition, PRCs could be readily and highly efficiently recovered to original phenolic resin via hydrolysis under specific mild acidic conditions but possessed high chemical stability under neutral conditions and even weak acidic conditions or acidic conditions in the absence of organic solvents with outstanding wettability and swellability toward the samples. Thermosets with different properties could be easily achieved via regulating raw materials. This work provides a promising dynamic covalent motif and a practical method to produce readily dual-recyclable (reprocess recyclable and chemically recyclable) thermosets with superior performance and stability.
学科主题	Polymer Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19951]
专题	2020专题
作者单位	Ma, SQ (corresponding author), Chinese Acad Sci, Key Lab Biobased Polymer Mat Technol & Applicat Z, Div Polymers & Composites, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Li, Qiong,Ma, Songqi,Wang, Sheng,et al. Green and Facile Preparation of Readily Dual-Recyclable Thermosetting Polymers with Superior Stability Based on Asymmetric Acetal[J]. MACROMOLECULES,2020,53(4):1474-1485.
APA	Li, Qiong.,Ma, Songqi.,Wang, Sheng.,Liu, Yanlin.,Abu Taher, Muhammad.,...&Zhu, Jin.(2020).Green and Facile Preparation of Readily Dual-Recyclable Thermosetting Polymers with Superior Stability Based on Asymmetric Acetal.MACROMOLECULES,53(4),1474-1485.
MLA	Li, Qiong,et al."Green and Facile Preparation of Readily Dual-Recyclable Thermosetting Polymers with Superior Stability Based on Asymmetric Acetal".MACROMOLECULES 53.4(2020):1474-1485.