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DOI | 10.1126/science.aay6230 |
A broadly applicable cross-linker for aliphatic polymers containing C-H bonds | |
Lepage, Mathieu L.1; Simhadri, Chakravarthi1; Liu, Chang1; Takaffoli, Mahdi2; Bi, Liting1; Crawford, Bryn2; Milani, Abbas S.2; Wulff, Jeremy E.1 | |
2019-11-15 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 366期号:6467页码:875-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Addition of molecular cross-links to polymers increases mechanical strength and improves corrosion resistance. However, it remains challenging to install cross-links in low-functionality macromolecules in a well-controlled manner. Typically, high-energy processes are required to generate highly reactive radicals in situ, allowing only limited control over the degree and type of cross-link. We rationally designed a bis-diazirine molecule whose decomposition into carbenes under mild and controllable conditions enables the cross-linking of essentially any organic polymer through double C-H activation. The utility of this molecule as a cross-linker was demonstrated for several diverse polymer substrates (including polypropylene, a low-functionality polymer of long-standing challenge to the field) and in applications including adhesion of low-surface-energy materials and the strengthening of polyethylene fabric. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496946200054 |
WOS关键词 | CARBENE INSERTION ; POLYETHYLENE ; LINKING |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/226238 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada; 2.Univ British Columbia, Mat & Mfg Res Inst, Kelowna, BC V1V 1V7, Canada |
推荐引用方式 GB/T 7714 | Lepage, Mathieu L.,Simhadri, Chakravarthi,Liu, Chang,et al. A broadly applicable cross-linker for aliphatic polymers containing C-H bonds[J]. SCIENCE,2019,366(6467):875-+. |
APA | Lepage, Mathieu L..,Simhadri, Chakravarthi.,Liu, Chang.,Takaffoli, Mahdi.,Bi, Liting.,...&Wulff, Jeremy E..(2019).A broadly applicable cross-linker for aliphatic polymers containing C-H bonds.SCIENCE,366(6467),875-+. |
MLA | Lepage, Mathieu L.,et al."A broadly applicable cross-linker for aliphatic polymers containing C-H bonds".SCIENCE 366.6467(2019):875-+. |
条目包含的文件 | 条目无相关文件。 |
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