Title

Atom-Economical, One-Pot, Self-Initiated Photopolymerization of Lactose Methacrylate for Biobased Hydrogels

Publication Date

3-23-2020

Document Type

Article

Department

Chemistry

Publication Title

ACS Sustainable Chemistry and Engineering

Volume

8

Issue

11

DOI

10.1021/acssuschemeng.0c00482

First Page

4606

Last Page

4613

Abstract

An excess of lactose and lactose-rich milk permeate is produced by the dairy industry. The use of these waste products has been investigated for the preparation of sugar-based hydrogels. An environmentally friendly, atom-economical reaction conducted in water with minimal waste was successfully applied in the synthesis of lactose methacrylate. Lactose methacrylate was copolymerized with the methacrylic acid generated as a byproduct of the initial synthesis using photoinduced polymerization to yield hydrogels. The photopolymerization was facilitated by low-intensity UV light (365 nm) without the need for an exogenous photoinitiator. Hydrogels with varied water uptake, rheological, and mechanical properties could be prepared by the use of different methacrylic anhydride loadings in the synthesis of lactose methacrylate.

Funding Number

1901635

Funding Sponsor

National Science Foundation

Keywords

dairy waste, gelation, hydrogel, lactose, methacrylic anhydride, milk permeate

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