Melting behavior and crystallization kinetics of sulfonated poly(butylene isophthalate)

2002 ◽  
Vol 42 (7) ◽  
pp. 1590-1599 ◽  
Author(s):  
Nadia Lotti ◽  
Lara Finelli ◽  
Andrea Munari ◽  
Valentina Siracusa
Keyword(s):  
Crystallization Kinetics ◽  
Melting Behavior ◽  
Kinetics Of ◽  
Sulfonated Poly

scholarly journals Melting behavior and non‐isothermal crystallization kinetics of copolyamide 6/12

2019 ◽  
Vol 2 (4) ◽  
Author(s):  
Chao Lin ◽  
Fei Zou ◽  
María P. Fernández‐Ronco ◽  
Yurong Yan ◽  
Rudolf Hufenus
Keyword(s):  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Melting Behavior ◽  
Isothermal Crystallization Kinetics ◽  
Kinetics Of

Non-Isothermal Crystallization Behavior and Kinetics of Compatibilized β Nucleated Polypropylene/Polystyrene Blends

2014 ◽  
Vol 893 ◽  
pp. 291-294 ◽  
Author(s):  
Hu Bin Lin ◽  
Chong Ming Du ◽  
Jian Yi Zhu ◽  
Wen Yao Liang
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Crystallization Behavior ◽  
Melting Behavior ◽  
Ethylene Propylene ◽  
Crystallization Characteristic ◽  
Different Content ◽  
Kinetics Of

The β nucleated polypropylene (PP), uncompatibilized β nucleated PP/polystyrene (PS) and compatibilized β nucleated PP/PS blends were prepared on a twinscrew extruder.and added into compatibilizers styrene-ethylene-propylene block copolymer (SEP) or two styrene-ethylene-butylen- e-styrene block copolymers (SEBS) with different content of styrene.The crystallization characteristic, melting behavior and crystallization kinetics of these composites were studied.

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

2021 ◽  
Vol 7 (4) ◽  
pp. 75
Author(s):  
Oluwakemi Ajala ◽  
Caroline Werther ◽  
Rauf Mahmudzade ◽  
Peyman Nikaeen ◽  
Dilip Depan
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Crystallization Kinetics ◽  
Crystallization Rate ◽  
Melting Behavior ◽  
Degree Of Crystallinity ◽  
Poly Lactic Acid ◽  
Avrami Model ◽  
Superior Mechanical Properties ◽  
Kinetics Of

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 of PLA-GNS nanocomposites were investigated using a differential scanning calorimeter (DSC). Low GNS content not only accelerated the crystallization rate, but also the degree of crystallinity of PLA. The Avrami model was used to fit raw experimental data, and to evaluate the crystallization kinetics for both isothermal and non-isothermal runs through the nucleation and growth rate. Additionally, the effect of the dimensionality and structure of the nanoparticle on the crystallization behavior and kinetics of PLA is discussed. GNS, having a similar fundamental unit as CNT and GNP, were observed to possess superior mechanical properties when analyzed by the nanoindentation technique. The scrolled architecture of GNS facilitated a better interface and increased energy absorption with PLA compared to CNTs and GNPs, resulting in superior mechanical properties.

scholarly journals Isothermal Crystallization Kinetics of Poly(4-hydroxybutyrate) Biopolymer

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2488 ◽  
Author(s):  
Ina Keridou ◽  
Luis J. del Valle ◽  
Lutz Funk ◽  
Pau Turon ◽  
Ibraheem Yousef ◽  
...  
Keyword(s):  
Crystallization Kinetics ◽  
Crystallization Temperature ◽  
Isothermal Crystallization ◽  
Crystallization Rate ◽  
Melting Behavior ◽  
Scattering Data ◽  
Dsc Measurements ◽  
Pom Analyses ◽  
Banded Spherulites ◽  
Kinetics Of

Thermal properties and crystallization kinetics of poly(4-hydroxybutyrate) (P4HB) have been studied. The polymer shows the typical complex melting behavior associated to different lamellar populations. Annealing processes had great repercussions on properties and the morphology of constitutive lamellae as verified by X-ray scattering data. Kinetics of isothermal crystallization was evaluated by both polarizing optical microscopy (POM) and calorimetric (DSC) measurements, which indicated a single crystallization regime. P4HB rendered banded spherulites with a negative birefringence when crystallized from the melt. Infrared microspectroscopy was applied to determine differences on the molecular orientation inside a specific ring according to the spherulite sectorization or between different rings along a determined spherulitic radius. Primary nucleation was increased during crystallization and when temperature decreased. Similar crystallization parameters were deduced from DSC and POM analyses (e.g., secondary nucleation parameters of 1.69 × 105 K2 and 1.58 × 105 K2, respectively). The effect of a sporadic nucleation was therefore minimized in the experimental crystallization temperature range and a good proportionality between overall crystallization rate (k) and crystal growth rate (G) was inferred. Similar bell-shaped curves were postulated to express the temperature dependence of both k and G rates, corresponding to the maximum of these curves close to a crystallization temperature of 14–15 °C.

Melting behavior, isothermal and nonisothermal crystallization kinetics of nylon 1111

2009 ◽  
Vol 49 (7) ◽  
pp. 1366-1374 ◽  
Author(s):  
Tao Jiang ◽  
Minying Liu ◽  
Peng Fu ◽  
Yudong Wang ◽  
Yunli Fang ◽  
...  
Keyword(s):  
Crystallization Kinetics ◽  
Melting Behavior ◽  
Nonisothermal Crystallization ◽  
Nonisothermal Crystallization Kinetics ◽  
Kinetics Of
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