Dispersion evaluation of microcrystalline cellulose/cellulose nanofibril-filled polypropylene composites using thermogravimetric analysis

Han, Yang‐Su; Gardner, Douglas J.; Nader, Jacques W.

doi:10.1007/s10973-010-1147-4

Cited by 22 publications

(12 citation statements)

References 22 publications

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“…It has been projected that production of such composites may soon become an important sector in plastic industry, at a level of 18 % in a year in North America and 14 % a year in Europe [1,2]. The interest in these materials stems from interesting and specific properties of wood used as a filler of plastics [3][4][5][6]. Wood can be an alternative to the other commonly used fillers such as carbon fibres, glass fibres, silica, talk, and others.…”

Section: Introductionmentioning

confidence: 99%

Influence of cellulose polymorphs on the polypropylene crystallization

Borysiak

2013

J Therm Anal Calorim

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Results of the hitherto research work on alkalisation of lignocellulosic materials have been much divergent. In view of the above, the subject of this study is mercerization of cellulose from pine wood. This choice of the subject permitted observation of transformation of cellulose I to cellulose II with no participation of other components of lignocellulosic materials. According to X-ray results, during mercerization the isolated cellulose was easily (completely) transformed into cellulose II variety, while the pine wood was converted more slowly to cellulose II polymorphs. Therefore, it could be concluded that the presence of lignin and hemicelluloses in wood prevented the transformation from cellulose I to II. The main objective of this research was to establish the effect of cellulose varieties on the nucleation ability of different fillers by using differential scanning calorimetry (DSC) and polarizing microscopy. The nucleating effect of the fillers occurs only in the presence of cellulose I variety. In contrast, the presence of cellulose II variety seems to practically eliminate the nucleating effect of the fillers. Moreover, nucleation of the mercerized wood (mixture of cellulose I and II) can be also observed, but this effect is not strong. It should be emphasised that as yet no correlation has been reported between the quantitative composition of cellulose polymorphic forms (appearing not only in wood, but in cellulose isolated from wood as well) and the nucleation ability of lignocellulosic fillers.

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Section: Introductionmentioning

confidence: 99%

Influence of cellulose polymorphs on the polypropylene crystallization

Borysiak

2013

J Therm Anal Calorim

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“…Among the mentioned polymers, polylactide (PLA) plays a dominating role and constitutes approximately 40 % of all biodegradable polymers. This polymer is called doubly green because it is both biodegradable and is obtained from renewable sources [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Physico-mechanical and thermal properties of epoxidized natural rubber/polylactide (ENR/PLA) composites reinforced with lignocellulose

Masek

Diakowska

Zaborski

2016

J Therm Anal Calorim

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The aim of the study was to prepare elastic composites of epoxidized natural rubber with polylactide that was reinforced with lignocellulose. To improve the functional properties of an ENR/PLA blend, we used lignocellulose modified with silanes and silica. The addition of silanes, particularly U511-tetraethoxysilane, improved the strength characteristics of ENR/PLA composites, which were primarily shown as a considerable improvement in the elasticity of these materials. According to the thermogravimetric analysis and its derivative and differential scanning calorimetry curves for lignocellulose before and after modification with silane, changes were verified in its thermal profiles. Based on the tests of accelerated ageing, it is observed that all of the ENR/PLA composites with lignocellulose are characterized by a great degradability. The ageing coefficient (K) and parameters of oxidation induction time (OIT/DSC) show that the modification of lignocellulose with silanes increases the resistance of these materials to the action of climatic conditions, particularly UV radiation at 340 nm.

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“…In particular, the composite with PP has been studied for mechanical properties and morphology [1][2][3][4][5][6][7]. Recently, micro-and nano-sized celluloses such as MFC and cellulose whisker have been studied as the new filler material by many investigators [8][9][10][11][12][13][14]. Although the cellulose fillers have an ability to produce a composite with a higher modulus and/or good transparency, they are hydrophilic and certainly aggregated in hydrophobic PP.…”

Section: Introductionmentioning

confidence: 99%

Preparation of novel polypropylene oligomer compatibilizer for polypropylene/microfibrous cellulose composite and its addition effect

2015

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Polypropylene (PP) oligomer was prepared by combination of photodegradation with a TiO 2 /polyethylene oxide and methyl linoleate (ML) graftpolymerization. The gel permeation chromatography and nuclear magnetic resonance measurements showed that it was an oligomer compound composed of PP main chain and ML oligomer side one. A compatibilizer performance of the PP oligomer was studied using a PP/microfibrous cellulose (MFC) composite. The effects of the loading on the morphology and tensile properties of PP/MFC composite were investigated as compared with those of the maleated PP (MAPP) loading. The PP oligomer loading brought about good dispersity of the MFC in the PP matrix. Young's modulus value of 0.75 % PP oligomer loading composite was increased to 300 % as compared with that without the loading. The dispersity and modulus increment rate were superior to the MAPP loading. The excellent compatibilizer performance was due to good miscibility with the PP matrix.Electronic supplementary material The online version of this article (

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Dispersion evaluation of microcrystalline cellulose/cellulose nanofibril-filled polypropylene composites using thermogravimetric analysis

Cited by 22 publications

References 22 publications

Influence of cellulose polymorphs on the polypropylene crystallization

Influence of cellulose polymorphs on the polypropylene crystallization

Physico-mechanical and thermal properties of epoxidized natural rubber/polylactide (ENR/PLA) composites reinforced with lignocellulose

Preparation of novel polypropylene oligomer compatibilizer for polypropylene/microfibrous cellulose composite and its addition effect

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