Solvent ageing polymer crystallization
WebThe effects of storage on the crystallization, dissolution and absorption of tolbutamide from amorphous tolbutamide-2-hydroxypropyl-beta-cyclodextrin (HP-beta-CyD) complex were investigated, in comparison with those of polyvinylpyrrolidone (PVP) solid dispersion. The amorphous solid complex of tolbu … WebJan 24, 2024 · In this work, Polyethylene terephthalate (PET), one of the most widely consumed polymers, has been used as starting material for the development of non-stick surfaces through a fast, simple and scalable method based on solvent-induced crystallization to generate roughness, followed by a fluorination step. Several solvents …
Solvent ageing polymer crystallization
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WebDec 1, 1992 · A Frozen Tube Model of Melting Point Depression of Solvents in Entangled Polymer Systems. The Journal of Physical Chemistry B 2003, 107 (7) , 1483-1490. DOI ... Polymer-Directed Crystallization of Atorvastatin. Journal of Pharmaceutical Sciences 2012, 101 (8) , 2941-2951. ... WebDec 1, 1992 · A Frozen Tube Model of Melting Point Depression of Solvents in Entangled Polymer Systems. The Journal of Physical Chemistry B 2003, 107 (7) , 1483-1490. DOI ...
WebThe ageing conditions chosen included both a high temperature for short times (160 ºC from 1-6 h) and a low temperature for long times (120 ºC from 120-720 h), which were used to generate ... WebApr 14, 2024 · Also, the solution and solvent properties (i.e., dielectric constant, surface tension, apparent viscosity, and surface charge density), polymer nature (i.e. mean molecular weight, molecular weight distribution, and molecular configuration) and ambient and equipment parameters are the most important factors on spinnability of polymer, …
WebAug 30, 2024 · In the present work, crystallization in melts and poor-solvent solutions of semiflexible polymers with different concentration was studied by means of dissipative …
WebOct 1, 1989 · Differential scanning calorimetry (d.s.c.) measurements showed that the enthalpy relaxation, induced by sub-T g annealing, of PVC samples with different …
WebApr 14, 2024 · Polymer gels are usually used for crystal growth as the recovered crystals have better properties. Fast crystallization under nanoscale confinement holds great … diabetic crash sleepyhttp://wwwcourses.sens.buffalo.edu/ce435/Koenig03.pdf cindy means pms copWebMar 21, 2009 · Influence of ageing on the cold crystallization of glassy poly ... or the solvent-induced crystallization. * Corresponding author 580 Moreover, ... Geil P H (1973) Polymer single crystals. John Wiley & Sons Inc., New York 2. Mandelkern L (1964) Crystallization of Polymers. McGraw-Hill, New York 3. cindy meanyWebJan 1, 2024 · Polymer Crystallization will remain a Wiley title but will be published and hosted by Hindawi and will benefit from Hindawi’s experience and expertise in publishing open access titles. Polymer Crystallization will continue to undergo a rigorous peer review process ensuring that quality remains high. Manuscripts published after January 1, 2024 ... diabetic cramping in hand and fingersWebFeb 10, 2024 · This paper provides a model of the crystallization kinetics of polyamide 6 (PA6), including primary and secondary crystallization, lamellar thickness distribution, and the evolution of the mobile and rigid fractions of the amorphous phase. The kinetics includes the two-phase structure, the monoclinic α-phase and the pseudo-hexagonal γ-meso … diabetic cranberry mini muffinsWebApr 7, 2024 · An ideal crystallization solvent should be unreactive, inexpensive, and have low toxicity. It is also important that the solvent have a relatively low boiling point (b.p. often … diabetic cranberry nut breadWebthat aqueous and solvent-treated semicrystalline polyester samples were similar in that there was an increase in struc-tural porosity as a result of crystallization in the swollen … cindy medicine