Synthesis and characterization of TPO–PLA copolymer and its behavior as compatibilizer for PLA/TPO blends

Ho, Chang‐Hong; Wang, Chau-Hui; Lin, Chia-Wei; Lee, Yu‐Der

doi:10.1016/j.polymer.2008.06.054

Cited by 175 publications

(106 citation statements)

References 31 publications

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“…The product PP-g-PA6 acts as an interfacial agent for PP/PA6 blends system. The formation of PP-g-PA6 copolymer was confirmed by Molau test [4,7] and the photographs are shown in Fig. 1.…”

Section: Characterization Of the Reactionmentioning

confidence: 81%

“…In general, the immiscible blends require a compatiblizing agent to achieve satisfactory interfacial adhesion and interfacial stress transfer between the two phases. Methods to reduce interfacial tension and to improve phase adhesion between the two immiscible components have attracted more and more attention [5][6][7][8]. Blends of PP and PA6 have been compatibilized by reactive extrusion, in which step PP is used to form copolymers that can improve the compatibility between the two components.…”

Section: Introductionmentioning

confidence: 99%

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Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

Jia

2009

E-Polymers

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Abstract:The effects of polypropylene-grafted-dibutyl maleate (PP-g-DBM) used as compatibilizer on mechanical, rheological and morphological properties of polypropylene (PP) and nylon 6 (PA6) blends was systematically investigated in this paper. The results of Molau test, solvent extraction and differential scanning calorimetry (DSC) indicated the formation of PP-g-PA6 in vicinity of interfaces during melting extrusion. Owing to the reaction between the reactive groups of PPg-DBM and amine (-NH 2 ) end groups of PA6, the tensile and impact strength of the PP-g-DBM compatibilized PP/PA6 blends were much higher than that of the uncompatibilized PP/PA6 blends. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicated that the domain sizes of the dispersed phase in the compatibilized PP/PA6 blends decreased and the interfaces become more indistinct, which indicated a clear compatibiliting effect was induced by the PP-g-DBM in the immiscible PP/PA6 blends, i.e. the PP-g-DBM was an effective compatibilizer for the PP/PA6 blends. In addition, the rheological measurements showed the PP-g-DBM compatibilized PP/PA6 blends possessed higher pseudo plasticity, melt viscosity and flow activation energy.

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“…The product PP-g-PA6 acts as an interfacial agent for PP/PA6 blends system. The formation of PP-g-PA6 copolymer was confirmed by Molau test [4,7] and the photographs are shown in Fig. 1.…”

Section: Characterization Of the Reactionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

Jia

2009

E-Polymers

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“…The chirality of the stereoisomers L(−), D(+) and its racemic mixture D(+), L(−) substantially dominate the properties of PLA: poly(L-lactide) or poly(D-lactide) with high optical purity is semicrystalline. Poly(D,L-lactide) is amorphous [6]. In recent years, there has been an increased demand in the polymer industry for producing stronger films that have better barrier properties than those already on the market.…”

Section: Introductionmentioning

confidence: 99%

Effect of Artificial Weathering on PLA/Nanocomposite Molecular Weight Distribution

et al. 2015

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Abstract:The reduction of polylactide acid (PLA) molecular weight for amorphous and semicrystalline grade nanocomposites with 5 wt% load of organomodified montmorillonite Cloisite30B (C30B) was investigated in periods of up to 360 h under artificial weathering. A correlation between artificial and natural weathering was established. The nanocomposites were prepared by mixing the C30B in PLA matrix using two stages of extrusion followed by injection molding. In addition, we also studied materials without C30B in PLA matrix prepared by a single stage of injection, as well as with two stages of extrusion followed by injection, in order to assess thermal effects. XRD (X-ray diffraction) and TEM (Transmission electron microscope) were used to determine the layer dispersion of the C30B within the PLA. An increase in the interlayer spacing of a sandwich structure corresponding to a partial exfoliation of the C30B was found, leading to the creation of OPEN ACCESSPolymers 2015, 7 761 small particles at nanoscale of one (1.29 nm) to eight (11.76 nm) platelets. Also, GPC (Gel permeation chromatography) was used to evaluate the molecular weight decay of neat PLA and its nanocomposites due to thermal processing and subsequent artificial weathering exposure. From thermal processing, a more significant decrease of polydispersity in amorphous PLA than in semicrystalline PLA counterparts could be observed. First order fitting of molecular weight decay of samples versus time of exposure under artificial weathering was found for all materials tested. It was observed that the addition of clay favored PLA degradation in amorphous PLA, in comparison with semicrystalline PLA in both thermal processing and artificial weathering. Moreover, a possible effect of C30B interactions with PLA chains under artificial weathering could be postulated.

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“…On the other hand, this polymer has some drawbacks as well, including moisture sensitivity, fast physical ageing, poor impact resistance and relatively high price [4][5][6]. As a consequence, many attempts have been made to modify it by plasticization [7][8][9][10][11][12][13], copolymerization [14][15][16][17][18][19], blending [20,21] or by the production of particulate filled or fiber reinforced composites [11][12][13][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Structure, properties and interfacial interactions in poly(lactic acid)/polyurethane blends prepared by reactive processing

Imre

Bedő

Domján

et al. 2013

European Polymer Journal

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Synthesis and characterization of TPO–PLA copolymer and its behavior as compatibilizer for PLA/TPO blends

Cited by 175 publications

References 31 publications

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

Effect of Artificial Weathering on PLA/Nanocomposite Molecular Weight Distribution

Structure, properties and interfacial interactions in poly(lactic acid)/polyurethane blends prepared by reactive processing

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