Qiu, Yaxin; Munna, Dheeman-Roy; Wang, Fang; Xi, Juqun; Wang, Zhifeng; Wu, Defeng published their research in Macromolecules (Washington, DC, United States) in 2021. The article was titled 《Regulating Asynchronous Deformations of Biopolyester Elastomers via Photoprogramming and Strain-Induced Crystallization》.Recommanded Product: 627-18-9 The article contains the following contents:
For shape-memory polymers (SMPs), introducing material heterogeneity is vital to tailor shape-shifting pathways. However, it is hard to reprogram the heterogeneity for both covalent networks and dynamic covalent networks after these networks are encoded. Here, photoactive coumarin derivative end-capped dangling chains were used to participate in building photoreversible polycaprolactone/poly(malic acid) networks, endowing the networks with reprogrammable heterogeneity and a capability of room-temperature storage of entropic energy. The alternations of network topol. with 365/254 nm UV irradiation and strain-induced crystallization behavior of as-prepared bio-based elastomers were studied, aiming at quant. guiding the spatiotemporal release of entropic energy to regulate asynchronous deformations. This work provides applicable methods for simplifying shaping manipulation or for diversifying shape-shifting pathways of SMPs. In the experiment, the researchers used many compounds, for example, 3-Bromopropan-1-ol(cas: 627-18-9Recommanded Product: 627-18-9)
3-Bromopropan-1-ol(cas: 627-18-9) was used in the synthesis of fluorescent halide-sensitive quinolinium dyes and molten salt-polymers. Furthermore, it was used in the synthesis of chiral, quaternary prolines via cyclization of quaternary amino acids.Recommanded Product: 627-18-9
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