4.7 Article

Anisotropic and Self-Healing Copolymer with Multiresponsive Capability via Recyclable Alloy-Mediated RDRP

期刊

MACROMOLECULAR RAPID COMMUNICATIONS
卷 42, 期 12, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.202100096

关键词

block copolymers; magnetically recyclable catalyst; reversible deactivation radical polymerization; self‐ healing; stimuli responsive polymers

资金

  1. MHRD, Govt. of India
  2. SERB, Govt. of India
  3. CSIR, Govt. of India
  4. SERB, India: Ramanujan Fellowship Award [SB/S2/RJN-113/2016]
  5. IIT Bhilai
  6. SERB, India: Early Career Research Award [ECR/2018/001990]

向作者/读者索取更多资源

A novel triple stimuli sensitive block copolymer has been synthesized, which responds to changes in temperature, pH, and light, and has the potential to be used in self-healing materials. The polymerization mechanism has been rationalized through density functional theory calculations.
A novel triple stimuli sensitive block copolymer is prepared by magnetically separable and reusable (up to multiple cycles) Ni-Co alloy nanoparticles mediated reversible deactivation radical polymerization (RDRP) at 25 degrees C, that responds to changes in temperature, pH, and light. Design of this block copolymer constitutes a temperature-sensitive N-isopropylacrylamide (NIPAM), an acid-sensitive lysine methacrylamide (LysMAM), and a light responsive umbelliferone (UMB) end group. The stimuli response, in response to one stimulus as well as combinations of stimuli, has been evaluated. Responsiveness to light allows the construction of self-healing materials. Density functional theory calculations rationalize the underlying mechanism of the polymerization.

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