WebJan 1, 2024 · Crystallization kinetics during the SIC are greatly enhanced in comparison with quiescent conditions, where the time required for completing the crystallization … WebJun 8, 2016 · In order to understand orientation-induced crystallization of polymers, we introduced an intermolecular interaction between polymer chains based on quantum mechanics. We therefore considered a pair of perfectly extended chains where the intermolecular interaction is assumed to be based on the hydrogen interaction with a …
Polymers Free Full-Text Atomistic Simulation of Flow-Induced ...
WebJul 1, 2024 · Experimental investigations revealed that the crystallization-induced volume shrinkage was about 4.7% for the PA12 polymer [ 5, 32 ], which is comparable to that caused by thermal contraction. The volume shrinkage for polymers with high crystallinity such as high-density polyethylene can reach 13% [ 5 ]. WebVarious approaches including laser induced crystallization technique has been reported to tackle this issue. We report on the crystallization of small- and macro-molecules under focused optical radiation from a femtosecond laser (λ = 800 nm). The efficacy of this technique is proved by crystallizing different samples such as sodium chloride ... has waitrose stopped free newspaper
3.5E: Initiating Crystallization - Chemistry LibreTexts
WebDec 11, 2024 · The crystallization-induced morphological transition of copolymer micelles is reversible in the cooling process. Besides the temperature, solvent selectivity is also a key factor for the self-assembly of semicrystalline BCPs in solution. Competition between the crystallization of core-forming blocks and the stretching of soluble blocks in ... WebApr 9, 2024 · At high flow strength, a flow-induced crystallization (FIC) occurred, producing a semicrystalline material possessing a high degree of crystallinity and primarily a monoclinic lattice structure. This FIC phase formed at a temperature (450 K) high above the quiescent melting point (≈400 K) and remained stable after cessation of flow for ... WebSep 26, 2024 · The shear induced crystallization allowed crystallization of PHA nanofibers immediately after applying high shear rate and elongation strain, avoiding subsequent cooling to initiate crystallization. Shearing of PHA increased non-isothermal crystallization temperature by 50 °C and decreased the temperature range in which the … has waited