Surface‐modified talc particles by acetoxy groups grafting: Effects on mechanical properties of polypropylene/talc composites

Castillo, Luciana Andrea; Barbosa, Silvia Elena; Capiati, Numa J.

doi:10.1002/pen.23243

Cited by 7 publications

(4 citation statements)

References 37 publications

(39 reference statements)

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“…These modified talc particles have an improved dispersion and distribution within PP matrix and an enhanced interfacial adhesion with PP. Mechanical properties of these composites were found to improve respect to PP-untreated talc ones, especially the tensile strength and the elongation at break [5]. However, the effect of filler morphology on composite mechanical properties has not been previously considered.…”

Section: Introductionmentioning

confidence: 92%

Influence of talc morphology on the mechanical properties of talc filled polypropylene

2013

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Injected polypropylene (PP)/talc composites were studied to evaluate the influence of different talc morphologies on their final mechanical properties. Talc genesis is responsible for type and content of associated minerals, crystalline degree, particle size distribution, and specially, morphology. Consequently, when talc is incorporated into PP, differences in the genesis mean differences in particle morphology and may influence the composite properties. Two talc samples having predominant macro and microcrystalline morphologies were used to prepare two composite sets to be tested. Thermal and mechanical properties of each PP/talc composites set were measured, analyzed and discussed comparatively. The results reveal that the main influences of talc morphology are given on modulus, yield strength and elongation at break of PP/talc composites. Macrocrystalline morphology of talc induces better composite mechanical properties than microcrystalline one. This behavior could be explained by talc characteristics as lamellarity, crystalline character and crystallinity degree.

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Section: Introductionmentioning

confidence: 92%

Influence of talc morphology on the mechanical properties of talc filled polypropylene

2013

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“…There are also a variety of particle fillers (Fig. d), like calcium carbonate , mica , glass beads , talc , silver , zinc oxide , titanium dioxide , and fly ash .…”

Section: Filler Reinforcementmentioning

confidence: 99%

Mechanical reprocessing of polyolefin waste: A review

Yin

Tuladhar

Shi

et al. 2015

Polymer Engineering & Sci

160

112

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Efficient technology and applications for recycled polymer waste has become increasingly important to decrease environmental contamination and to conserve nonrenewable fossil fuels. Mechanical recycling is the most widely practiced in Australia, since it is relatively easy and economic; and moreover, infrastructure for collection and reprocessing has been well established. In order to improve quality of end products of recycled plastics, various workable reprocessing techniques in the second stage of mechanical recycling have been developed and widely applied in the recycling industry. This article critically reviews the current reprocessing techniques of recycled polyolefins. Reprocessing recycled polyolefins is always accompanied with degradation, crystallization, and consequent processability problems, which result from molecular chain scission, branching, and crosslinking. The present state of knowledge and technology of various reprocessing techniques, including melt blending, filler reinforcement and mechanochemistry, is then described and evaluated systematically. Each reprocessing technique presents its own individual advantages and special applications. POLYM. ENG. SCI., 55:2899-2909, 2015

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“…Composites based on isotactic polypropylene (iPP) and talc have been being studied since many years ago, but however and despite the time elapsed since early works, it is an actual topic . In this work, it is proposed that an interfacial modification significant enough as to be detected at the macroscopic scale also must be found at the subsequent micro, meso, and nano scales, particularly as it is in the nano meter domain where the interfacial changes take place.…”

Section: Introductionmentioning

confidence: 99%

A dynamic mechanical analysis of the interfacial changes induced from both the reinforcement and the matrix sides in polypropylene/surface modified talc composites

García‐Martínez

Taranco

Areso

2015

J of Applied Polymer Sci

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The interfacial changes associated with a series of polypropylene based composite materials with modified interphases from the reinforcement side, from the matrix side and both were studied by following their dynamic mechanical behavior. Composites consisted in an isotactic polypropylene (iPP) matrix, a series of talc with different surface functionalities (hydroxyl, chloride, n‐butyl amine, and silanes) and a commercial interfacial agent form the matrix side (iPP‐SA with 5% of grafts). A comprehensive interpretation of the link existing between the dynamic mechanical responses of the series of 75/25 iPP/talc composites and the molecular relaxation spectrum occurring in the polymer phase of the composites is made with emphasis on the role played by the interfacial modifications performed from each and both sides of the interphase. Dynamic mechanical analysis has been used here to study how the intended interfacial modifications affected the behavior of the composites. The efficiency of the interfacial phenomena is discussed from a phenomenological point of view as well as by considering classical criteria such as the glass transition temperature and the glass to rubbery transition. Finally, a correlation between mechanical parameters from the microscopic scale and others from the macroscopic scale appears to emerge. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42678.

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Surface‐modified talc particles by acetoxy groups grafting: Effects on mechanical properties of polypropylene/talc composites

Cited by 7 publications

References 37 publications

Influence of talc morphology on the mechanical properties of talc filled polypropylene

Influence of talc morphology on the mechanical properties of talc filled polypropylene

Mechanical reprocessing of polyolefin waste: A review

A dynamic mechanical analysis of the interfacial changes induced from both the reinforcement and the matrix sides in polypropylene/surface modified talc composites

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