Results 11 to 20 of about 304,137 (289)

Unified isothermal and non-isothermal modelling of neat PEEK crystallization [PDF]

open access: yesJournal of Thermal Analysis and Calorimetry, 2013
A differential generalized Avrami’s law is used to model crystallization kinetic of PEEK in considering that PEEK crystallization results from the contribution of two distinct mechanisms. The form of this equation allows to predict with good accuracy both isothermal and non-isothermal crystallization kinetics.
Bessard, Emeline   +2 more
openaire   +3 more sources

CRYSTALLIZATION OF POLYPROPYLENE: APPLICATION OF DIFFERENTIAL SCANNING CALORIMETRY PART I. ISOTHERMAL AND NON-ISOTHERMAL CRYSTALLIZATION

open access: yesContributions, Section of Natural, Mathematical and Biotechnical Sciences, 2017
A b s t r a c t: Theoretical background of the crystallization of isotactic polypropylene is summarized with respect to the potential of DSC method applied for the analysis of isothermal and non-isothermal processes.
Luljeta Raka, Gordana Bogoeva-Gaceva
openaire   +3 more sources

Distinct Crystallization Pathways of Polyoxymethylene in Methanol System

open access: yesCrystals
Recrystallization of polyoxymethylene (POM) in solvent is an effective post-treatment method for manufacturing a better POM product. Herein, the crystallization process of POM in methanol was investigated with the use of a series of equipment.
Haowen Du   +7 more
doaj   +2 more sources

Effect of Single-walled Carbon Nanotubes on Non-isothermal Crystallization Kinetics of Polypropylene: Comparison of Ozawa and Cazé-Chuah Methods [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Non-isothermal crystallization kinetics of polypropylene (PP) and PP containing 0.5 wt% singlewalled carbon nanotubes (PP/SWNT) were studied at various cooling rates using differential scanning calorimetry technique.
M. Razavi-Nouri
doaj   +1 more source

Crystallization Behaviors of Composites Comprising Biodegradable Polyester and Functional Nucleation Agent

open access: yesCrystals, 2021
In this study, a thorough study of the crystallization behaviors of the biodegradable polymer composites of poly(ethylene succinate) (PESu) and hexagonal boron nitride (h-BN) was carried out.
Li-Ting Lee, Hsiang-Yun Tseng, Tzi-Yi Wu
doaj   +1 more source

Crystallization Kinetics of Poly(lactic acid)–Graphene Nanoscroll Nanocomposites: Role of Tubular, Planar, and Scrolled Carbon Nanoparticles

open access: yesC, 2021
Graphene nanoscrolls (GNS) are 1D carbon-based nanoparticles. In this study, they were investigated as a heterogeneous nucleating agent in the poly(lactic acid) (PLA) matrix. The isothermal and non-isothermal melting behavior and crystallization kinetics
Oluwakemi Ajala   +4 more
doaj   +1 more source

Heterogeneous Nucleation Effect of N, N'-Adipic Bis(4-phenylbutyric Acid) Dihydrazide on Crystallization Process of Poly(L-lactic Acid)

open access: yesMedžiagotyra, 2019
Enhancing crystallization ability is a fundamental challenges in Poly(L-lactic acid) (PLLA) industry, therefore, the goal of this work was to synthesis a new organic nucleating agent N, N'-adipic bis(4-phenylbutyric acid) dihydrazide (APAD), and ...
Yan-Hua CAI, Li-Sha ZHAO
doaj   +1 more source

Crystallization kinetics of poly(lactic acid)-talc composites [PDF]

open access: yes, 2011
The crystallization kinetics of Poly(lactic acid) / talc composites were determined over a range of 0 wt.% to 15 wt.% of talc. Talc was found to change the crystallization kinetics.
Bocchini, Sergio   +5 more
core   +1 more source

Crystallization behavior and morphological features of ethylene-vinyl alcohol 44 copolymer

open access: yeseXPRESS Polymer Letters, 2022
This work is a first attempt to study the crystallization behavior of ethylene-vinyl alcohol copolymer with 44 mol% of ethylene units (EVOH44) and to observe the supermolecular structures developed during its crystallization.
Clement Freymond   +6 more
doaj   +1 more source

Crystallization and Melting Behavior of Biodegradable Poly(L-lactic acid)/Talc Composites

open access: yesE-Journal of Chemistry, 2012
Crystallization and melting behavior of Poly(L-lactic acid)(PLLA)/Talc composites with different talc content were investigated in detail. The addition of talc can increase the overall crystallization rate of PLLA, 5%talc makes the melt-crystallization ...
Yan-Hua Cai
doaj   +1 more source

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