Fabrication of sustainable, toughening epoxy thermosets with rapidly thermal and light‐triggered shape memory property

Abstract

Shape memory epoxy thermosets (SMETs) have attracted more and more attention in artificial intelligence applications. However, the fabrication of lightweight and high-strength bio-based SMET with multiple-response shape memory properties remains a challenge. Herein, a thermal and light-triggered bio-based SMET with excellent mechanical property and toughness is prepared. To fabricate the SMET, a bio-based curing agent (CFMA) derived from cardanol, menthane diamine and furfural is utilized to react with epoxy resin E51 to prepare the SMET. The curing kinetics of SMET is measured by non-isothermal DSC, and the reaction order is 0.784. The SMETs have excellent thermal stability and mechanical strength. Based on the toughening effect of the bio-based curing agent, the SMETs exhibit excellent stretchability, and the toughness of

From vanillin to biobased aromatic polymers

“…4 Derived from the cashew nut shell, cardanol is a highly promising renewable phenol source that offers a natural alternative to petrochemical-derived phenols for the production of bio-based thermosets. 5 The utilization of furfural as a resource for bio-based polymers has been investigated, including its conversion into succinic acid and 1,4-butanediol, which serve as monomers for polybutylene succinate, as well as its conversion into bio-based terephthalic acid, one of the monomers for polyethylene terephthalate (PET). 6 Different from CNSL, lignin is the second most abundant natural polymer after cellulose, accounting for approximately 15-30% of the dry weight of lignocellulosic biomass.…”

Nitrogen‐Containing Polymers Derived from Terpenes: Possibilities and Limitations

“…In a following work of the group, the same curing agent was used for the synthesis of a thermoset with thermal and light-triggered shape memory properties. [70] As emphasized in this section, MDA is an example of the numerous possibilities of using terpene-based amines to access novel materials with desirable properties. As an AA monomer for step-growth polymer synthesis, 5 can be applied in a variety of ap-proaches for the generation of partly or fully biobased polymers with interesting properties.…”

“…In a following work of the group, the same curing agent was used for the synthesis of a thermoset with thermal and light‐triggered shape memory properties. [ 70 ]…”

Efficient preparation of fluorescent nanomaterials derived from chitin via a modification-first strategy assisted by click chemistry

“…14 It is one of the most important natural polysaccharides on earth after cellulose, which is considered as an almost inexhaustible energy source and a promising green material to meet the sustainable development needs of human society. [15][16][17][18][19] The chemical structure of chitin is very similar to that of cellulose except that the hydroxyl group at the C2 position is replaced by acetylamino. 20 The acetylamino groups of chitin can be transformed into more active amino groups by the deacetylation process with alkali, and the presence of a large number of regularly arranged hydroxyl and amino groups in its structure provides more possibilities and ways for the preparation of innovative fluorescent chitin materials.…”