Non-isothermal crystallization kinetics and thermal behaviour of PA12/SEBS-g-MA blends

Rinawa, Khushboo; Maiti, Sukumar; Sonnier, Rodolphe; Cuesta, J-M Lopez

doi:10.1007/s12034-015-1016-7

Cited by 13 publications

(8 citation statements)

References 28 publications

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“…Thus, the peaks are shifted to a lower temperature and due to the shorter time frame, the peaks get more intensified and broadened. Similar observation and their attributes are reported in the literature 4,6,9–12,15,16 . The details of T p , T 0 and T c of the blends at different cooling rates are listed in Table 2.…”

Section: Resultssupporting

confidence: 86%

“…Similar observation and their attributes are reported in the literature. 4,6,[9][10][11][12]15,16 The details of T p , T 0 and T c of the blends at different cooling rates are listed in Table 2. The magnitude of T c gradually increased with the cooling rate in the blend compositions.…”

Section: Exothermic Crystalline Curves At Different Cooling Ratesmentioning

confidence: 99%

“…Therefore, the non-isothermal crystallization kinetics approach is preferred over the isothermal kinetics approach to study the crystallization behavior more realistically. 6,[9][10][11][12] In multiphase polymer systems, as in polymer blends, the crystallization process is reported to be influenced by various surface, material and interfacial hindrance factors contributed by the participating phases. 8,9,13,14 Reportedly, the thermal diffusion induced regularity of polymer chains followed by the lower energy conformation/transformation of polymer chain at the site of high intermolecular force enables the stiffening of polymer chains.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the conventional polymer processing techniques like injection molding, extrusion process, compression molding are generally operate within the non‐isothermal framework (dynamic environment). Therefore, the non‐isothermal crystallization kinetics approach is preferred over the isothermal kinetics approach to study the crystallization behavior more realistically 6,9–12 …”

Section: Introductionmentioning

confidence: 99%

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On the crystal growth kinetics of ultra‐toughened biobased polyamide 410: New insights on dynamic crystallization

Samantaray

Satapathy

2021

J of Applied Polymer Sci

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The influence of elastomeric poly (octene-co-ethylene) on the crystallization of polyamide 410 in PA-410/POE-g-MA blends was systematically analyzed using a non-isothermal crystallization kinetics approach. A novel power-law criterion was employed to characterize the crystallization regimes (primary and secondary) as a function of cooling rate to understand the nature of crystal arrangement vis-a-vis various kinetic models proposed by Avrami, Jeziorny (modified Avrami method), Ozawa and Liu-Mo. The activation energy pattern with fractional crystallinity from onset to fully developed crystals is discussed as per Friedman's theory. The POE phase acted as a weak nucleating agent for PA 410. The effect of elastomer on crystallization rate constant remained almost unchanged regardless of the blend composition. This insensitivity is attributed to (1) nucleating effect of POE-g-MA (because of resemblance in the molecular scheme) and (2) hindrance effect through the formation of an interfacial network; these two effects nearly offset one another. Our study illustrates the crucial dependence of acceleration of cooling that is, acceleration required for attaining a certain fraction of crystallinity with composition (threshold elastomer concentration), on an interfacial network in binary blends.

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Section: Resultssupporting

confidence: 86%

Section: Exothermic Crystalline Curves At Different Cooling Ratesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the crystal growth kinetics of ultra‐toughened biobased polyamide 410: New insights on dynamic crystallization

Samantaray

Satapathy

2021

J of Applied Polymer Sci

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“…Firstly, we observe that PA11 mass loss occurs at higher temperatures when blended with SEBS-g-MA up to 440°C due to the chemical interaction between PA11 and maleic anhydride groups of SEBS-g-MA. At further increase in temperature, SEBS-g-MA decomposition induces a faster decomposition of the blend [33]. The incorporation of both bare and functionalized HNTs induce higher temperature of mass loss for PA11/SEBS-g-MA blends, being however much higher for Hal-S.…”

Section: Thermal Propertiesmentioning

confidence: 98%

Effects of functionalized halloysite on morphology and properties of polyamide-11/SEBS-g-MA blends

Sahnoune

Taguet

Otazaghine

et al. 2017

European Polymer Journal

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Halloysite nanotubes (HNTs) were functionalized by grafting styrene-ethylene-butylene-styrene (SEBS) copolymer chains after a two-step modification procedure. Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA) and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) were used to determine the grafting rate. Then, raw and functionalized halloysites were incorporated into polyamide-11(PA11)/ styrene-ethylene-butylene-styrene grafted maleic anhydride (SEBS-g-MA) blends (85/15 w/w). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) micrographs show a good dispersion of both halloysites particles and SEBS-g-MA nodules in the PA11 matrix. In the case of functionalized halloysite, the presence of HNTs bundles surrounded with fine SEBS-g-MA nodules is observed. Atomic force microscopy (AFM) also highlighted the different blends morphologies. Incorporation of functionalized halloysite leads to an improvement of the thermal properties without affecting the PA11 crystallization. Moreover, mechanical performance, especially toughness, was highly improved in the presence of functionalized halloysite due to a good stress transfer from the matrix to the modified halloysite agglomerates surrounded by SEBS-g-MA.

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Estimating the activation energy of crystallization in blends of poly L‐lactic acid and poly(propylene 2,5‐furan dicarboxylate) during isothermal melt crystallization using temperature dependent infrared spectroscopy

Sharma,

Lata,

Patel

et al. 2024

J of Applied Polymer Sci

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Blends of Poly‐L‐Lactic Acid (PLLA) and Poly(propylene‐2,5‐furan dicarboxylate) (PPF) which have similar thermal properties were prepared by melt‐mixing. The crystalline/crystalline blends were investigated by Differential Scanning Calorimetry, Polarized Optical Microscopy, Wide Angle X‐Ray Diffraction and temperature dependent Fourier Transform Infrared Spectroscopy. The presence of two glass transition temperatures (Tg) in the blends confirmed immiscibility. The X‐Ray diffraction pattern ruled out the formation of new crystal morphology. PLLA formed large negative birefringent spherulites while PPF spherulites were extremely small. The isothermal crystallization kinetics of the two polyesters in the blends were investigated by monitoring the absorbance intensities of the crystalline infrared bands at 711 cm−1 and 990 cm−1 for PLLA and PPF respectively. Both neat polyesters exhibited a slower crystallization rate, but their behavior varied in the blends. The activation energy (Ea) of crystallization of PLLA and PPF calculated using the Arrhenius equation were −96.58 and −148.59 kJmol−1 respectively. The Ea of both polyesters increased as the content of PLLA in the blends increased. Temperature dependent FTIR was successful in determining the crystallization parameters in crystalline/crystalline blends of PLLA and PPF.

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Non-isothermal crystallization kinetics and thermal behaviour of PA12/SEBS-g-MA blends

Cited by 13 publications

References 28 publications

On the crystal growth kinetics of ultra‐toughened biobased polyamide 410: New insights on dynamic crystallization

On the crystal growth kinetics of ultra‐toughened biobased polyamide 410: New insights on dynamic crystallization

Effects of functionalized halloysite on morphology and properties of polyamide-11/SEBS-g-MA blends

Estimating the activation energy of crystallization in blends of poly L‐lactic acid and poly(propylene 2,5‐furan dicarboxylate) during isothermal melt crystallization using temperature dependent infrared spectroscopy

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