Weldable and Reprocessable Biomimetic Polymer Networks Based on a Hydrogen Bonding and Dynamic Covalent Thiourea Motif

被引：21

作者：

Lee, Dong Soo ^{[1
,2
]}

Choi, Yong-Seok ^{[3
]}

Hwang, Jae Hyuk ^{[1
,4
,5
]}

Lee, Jin-Hyeong ^{[6
]}

Lee, Woohwa ^{[1
]}

Ahn, Suk-kyun ^{[6
]}

Park, Sungmin ^{[1
]}

Lee, Jung-Hyun ^{[2
]}

Kim, Yong Seok ^{[1
,7
]}

Kim, Dong-Gyun ^{[1
,7
]}

机构：

[1] Korea Res Inst Chem Technol, Adv Mat Div, Daejeon 34114, South Korea

[2] Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea

[3] Korea Inst Sci & Technol, Composite Mat Applicat Res Ctr, Wanju Gun 55324, Jeonbuk, South Korea

[4] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea

[5] Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea

[6] Pusan Natl Univ, Dept Polymer Sci & Engn, Busan 46241, South Korea

[7] Univ Sci & Technol, Adv Mat & Chem Engn, KRICT Sch, Daejeon 34114, South Korea

来源：

ACS APPLIED POLYMER MATERIALS | 2021年 / 3卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

covalent adaptable networks; biomimetic polymer networks; thiourea; dynamic covalent bond; hydrogen (H) bond; MECHANICAL PERFORMANCE; SACRIFICIAL BONDS; ELASTOMERS; ROBUST; TOUGH;

D O I：

10.1021/acsapm.1c00667

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here we describe the use of thiourea linkage as a hydrogen (H) bonding and dynamic covalent dual-functional motif to enhance mechanical versatility in biomimetic polymer networks (BMPNs). By controlling the dynamic thiourea bond exchanges in the covalently cross-linked BMPNs, greatly improved malleability and reprocessability are obtained while maintaining their assorted mechanical characteristics of stiffness, strength, toughness, resilience, and adaptability. Such characteristics enable versatile shape manipulation and mechanical functions of the BMPN-based 3D structures, including shape reconfiguration, welding, shape memory, load bearing, deformation/recovery, repair, and reprocessing.

引用

页码：3714 / 3720

页数：7

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