Crystallization and thermal properties of melt-drawn PCL/PLA microfibrillar composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00458359" target="_blank" >RIV/61389013:_____/16:00458359 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s10973-015-5142-7" target="_blank" >http://dx.doi.org/10.1007/s10973-015-5142-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-015-5142-7" target="_blank" >10.1007/s10973-015-5142-7</a>

Result language

angličtina

Original language name

Crystallization and thermal properties of melt-drawn PCL/PLA microfibrillar composites

Original language description

Microfibrillar composites (MFC) are advanced systems with reinforcement formed in situ by melt or cold drawing of suitable polymer blends. In the case of biodegradable poly (ɛ-caprolactone)/poly (lactic acid) (PCL/PLA) system, formation of microfibrillar structure by melt drawing is only possible by modification of the polymer components by clay. The effect of clay is quite complex; this study is focused on the effect of in situ formed fibrillar structure of PLA and clay in MFC with the PCL matrix on crystallinity and glass transition of both polymer components. The DSC analysis shows that clay addition to neat PCL, its blending with PLA, and addition of clay to the PCL/PLA blend increase PCL crystallinity. Clay addition and blending with PCL dramatically increase crystallinity of originally almost amorphous PLA. The non-isothermal PCL crystallization kinetics evaluated by the new recently proposed method reveals pronounced nucleation effect of clay addition and blending on PCL crystallization. An indication has been found of a negative correlation between maximum crystallization rate of PCL and its crystallinity. The glass transition temperature T g of both components evaluated by DMA in the undrawn system mostly decreases with clay addition and increases with drawing. These effects are more significant for PLA due to its fibrillar structure. T g is affected by the mixing protocol, as a result of different course of clay migration between components and localization, especially in the interfacial area.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JI - Composite materials

OECD FORD branch

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Project

<a href="/en/project/GA13-15255S" target="_blank" >GA13-15255S: Self reinforced polymer-polymer composites upgraded by nanofillers of various geometry</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Volume of the periodical

124

Issue of the periodical within the volume

2

Country of publishing house

HU - HUNGARY

Number of pages

7

Pages from-to

799-805

UT code for WoS article

000373576600024

EID of the result in the Scopus database

2-s2.0-84951200967