Crystallization and melting behaviors of maleated polyethylene and its composite with fibrous cellulose

Zhang, Farao; Qiu, Wulin; Yang, Liqun; Endo, Takashi; Hirotsu, Takahiro

doi:10.1002/app.12504

Cited by 13 publications

(11 citation statements)

References 28 publications

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“…CEL, CA, CAP, and CAB are semicrystalline or amorphous polymers, as evidenced by XRD measurements in Figure 7(a-d), respectively. Zhang et al 15 recently argued that fillers with low crystallinity favor compatibility in composites, and this can explain the superior mechanical properties of the systems with CAP and CAB, which are less crystal- (Table IV) correspond to the (110) and (200) diffraction planes, respectively. 11,12,25,33,34 The interplanar spacing (d hkl ) has been determined with Bragg's equation:…”

Section: Resultsmentioning

confidence: 99%

“…[10][11][12] One of the most common matrix modifications is the grafting of maleic anhydride (MA) to polyolefins, which increases the compatibility through the esterification between the MA groups and the hydroxyl groups of cellulose (CEL). [11][12][13][14][15][16][17][18] The compatibilization is expected to take place in the polyolefin amorphous phase. [11][12][13] Cellulose esters such as cellulose acetate (CA), cellulose acetate propionate (CAP), and cellulose acetate butyrate (CAB) are thermoplastic materials produced through the esterification of CEL.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structure and properties of composites of polyethylene or maleated polyethylene and cellulose or cellulose esters

Kosaka

Kawano

Petri³

et al. 2006

J of Applied Polymer Sci

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Composites of linear low-density poly(ethylene-co-butene) (PE) or maleated linear low-density poly (ethylene-co-butene) (M-PE) and cellulose (CEL), cellulose acetate (CA), cellulose acetate propionate (CAP), or cellulose acetate butyrate (CAB) were prepared in an internal laboratory mixer with 20 wt % polysaccharide. The structure and properties of the composites were studied with tensile testing, dynamic mechanical thermal analysis, differential scanning calorimetry, extraction with a selective solvent, Raman spectroscopy, and X-ray diffraction. Composites prepared with M-PE presented yield stress and elongation values higher than those of composites prepared with PE, showing the compatibilizer effect of maleic anhydride. Dynamic mechanical thermal analysis performed for M-PE-CEL, M-PE-CA, M-PE-CAP, and M-PE-CAB composites showed one glass-transition temperature (T g ) close to that observed for pure M-PE, and for M-PE-CAP, another T g lower than that measured for the polysaccharide was observed, indicating partial mutual solubility. These findings were confirmed by the extraction of one phase with a selective solvent, gravimetry, and Raman spectroscopy. X-ray diffraction showed that the addition of CEL, CA, CAP, or CAB had no influence on the lattice constants of PE or M-PE, but the introduction of the reinforcing material increased the amorphous region.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structure and properties of composites of polyethylene or maleated polyethylene and cellulose or cellulose esters

Kosaka

Kawano

Petri³

et al. 2006

J of Applied Polymer Sci

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“…This result is ascribed to the beneficial effect of MA grafting to the PP backbone, which leads to an increase of the interfacial modulus. [27][28][29][30][31][32] The interfacial modulus corresponds to the polymer modulus in the filler-matrix interphase. Figure 5b shows the evolution of the tensile strength as a function of OFI cladode flour content.…”

Section: High Strain Behavior (Non Linear Conditions)mentioning

confidence: 99%

Lignocellulosic Flour from Cladodes of Opuntia ficus‐indica Reinforced Poly(propylene) Composites

Malainine

Mahrouz

Dufresne

2004

Macro Materials & Eng

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Summary: A lignocellulosic flour was obtained by grinding dried cladodes of Opuntia ficus‐indica. It was used as low cost natural filler in PP and the effect of the treatment of the filler with MAPP was also investigated. The morphology and thermal properties of these composites were evaluated by SEM and DSC, respectively. MAPP coating resulted in a better adhesion between the filler and the matrix and higher homogeneity of the material. A decrease of the degree of crystallinity of the PP matrix in presence of the untreated filler was observed. Dynamic mechanical analysis and tensile properties were also studied. High‐strain tensile properties display enhanced mechanical properties for MAPP treated‐based composites only. When conditioned in highly moist atmosphere (98% RH), both the water uptake and water diffusion coefficient decrease when the filler was treated. These effects were ascribed to the promoting interfacial adhesion induced by the coating treatment. In liquid water, this increased adhesion between the filler and the matrix results in a higher weight loss of the material. It is due to the removal of the grafted polymer from the material during the dissolution of part of the filler.SEMs of freshly fractured surface for a PP film filled with 10 wt.‐% of MAPP treated OFI cladode (top) and calcium oxalate crystallite within the PP matrix for a 3 wt.‐% filled composite (bottom).magnified imageSEMs of freshly fractured surface for a PP film filled with 10 wt.‐% of MAPP treated OFI cladode (top) and calcium oxalate crystallite within the PP matrix for a 3 wt.‐% filled composite (bottom).

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“…The compatibility of HDPE, however, is poor with most materials because of the lack of polar groups in the backbone. Introducing polar groups, such as maleic anhydride to the HDPE matrix, 8 modifying the filler surface, 10 are commonly used techniques to improve the compatibility of HDPE.…”

Section: Introductionmentioning

confidence: 99%

Isothermal crystallization of high density polyethylene and nanoscale calcium carbonate composites

Huang

2007

J of Applied Polymer Sci

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High density polyethylene (HDPE) and calcium carbonate (CaCO 3 ) nanocomposites with maleic anhydride grafted HDPE (manPE) as a compatibilizer were prepared via compounding in a twin-screw extruder. The CaCO 3 are well dispersed in the HDPE matrix from the observation of transmission electron microscope. The isothermal crystallization kinetics was studied by differential scanning calorimetry and simulated by Avrami and Tobin models. The nucleation constants and fold surface free energy were estimated from LauritzenHoffman relation. The results indicate that both manPE and well-dispersed CaCO 3 particles would act as nuclei to induce heterogeneous nucleation and enhance crystallization rate.

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Crystallization and melting behaviors of maleated polyethylene and its composite with fibrous cellulose

Cited by 13 publications

References 28 publications

Structure and properties of composites of polyethylene or maleated polyethylene and cellulose or cellulose esters

Structure and properties of composites of polyethylene or maleated polyethylene and cellulose or cellulose esters

Lignocellulosic Flour from Cladodes of Opuntia ficus‐indica Reinforced Poly(propylene) Composites

Isothermal crystallization of high density polyethylene and nanoscale calcium carbonate composites

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