Synergistic Effect of Surface-Modified MgO and Chitin Whiskers on the Hydrolytic Degradation Behavior of Injection Molding Poly(l-lactic acid)

This work studied the properties of poly(lactic acid) (PLA) and chemically crosslinked poly(lactic acid) (CrPLA) in the presence of different types of silica (SiO2): SiO2 from rice husk ash (RhSiO2) and commercially available SiO2 (CoSiO2). A mixture of triallyl isocyanate and dicumyl peroxide was used as a chemical crosslinking agent. The rice husk was burnt in a furnace to extract RhSiO2. The thermal and mechanical properties of the PLA and CrPLA composites were investigated as a function of the SiO2 content. The presence of C–H functional groups supports the compatibility of stearic acid and RhSiO2, thereby facilitating the esterification reaction observed in the Fourier transform infrared-attenuated total reflectance spectra. This played an important role in changing the properties of the PLA-based composites. The concave fracture surfaces were consistent with the tensile results, the thermal properties, and the degree of swelling, which suggested that there was a better reaction between stearic acid and RhSiO2. However, the heat deflection temperatures of both the PLA and the CrPLA composites were not significantly affected by blending with either CoSiO2 or RhSiO2.

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Effect of reinforcing particles on hydrolytic degradation behavior of poly (lactic acid) composites

Composites Part B Engineering ◽

10.1016/j.compositesb.2016.04.029 ◽

2016 ◽

Vol 96 ◽

pp. 248-254 ◽

Cited By ~ 26

Author(s):

Mei-Xian Li ◽

Sung-Ha Kim ◽

Sung-Woong Choi ◽

Koichi Goda ◽

Woo-Il Lee

Keyword(s):

Lactic Acid ◽

Hydrolytic Degradation ◽

Poly Lactic Acid ◽

Degradation Behavior ◽

Reinforcing Particles

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Unraveling the decisive role of surface CeO2 nanoparticles in the Pt-CeO2/MnO2 hetero-catalysts for boosting toluene oxidation: Synergistic effect of surface decorated and intrinsic O-vacancies

Chemical Engineering Journal ◽

10.1016/j.cej.2021.129399 ◽

2021 ◽

pp. 129399

Author(s):

Shengpeng Mo ◽

Jun Li ◽

Riquan Liao ◽

Peng Peng ◽

Jingjing Li ◽

...

Keyword(s):

Synergistic Effect ◽

Decisive Role ◽

Ceo2 Nanoparticles ◽

Toluene Oxidation ◽

Effect Of Surface

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Alkali and epoxy-silane surface modified pine cone flour reinforced polypropylene/poly (lactic acid) blend: viscoelastic and morphological characterization

Journal of Adhesion Science and Technology ◽

10.1080/01694243.2021.1952677 ◽

2021 ◽

pp. 1-24

Author(s):

Fayçal Kabache ◽

Sorya Nekkaa ◽

Melia Guessoum

Keyword(s):

Lactic Acid ◽

Morphological Characterization ◽

Poly Lactic Acid ◽

Pine Cone ◽

Surface Modified

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Synthesis and Properties of Biodegradable Liquid Crystalline Poly(ester-Urethane)s Based on Poly(L-Lactic Acid)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.652-654.459 ◽

2013 ◽

Vol 652-654 ◽

pp. 459-462

Author(s):

Ya Tong Guo ◽

Zhu Zheng ◽

Zhen Qi Hou ◽

Jie Du

Keyword(s):

Phase Transition ◽

Thermal Stability ◽

Lactic Acid ◽

Physical Properties ◽

Liquid Crystalline ◽

Degradation Rate ◽

Hydrolytic Degradation ◽

Hexamethylene Diisocyanate ◽

Solution Polymerization ◽

Phase Transition Temperatures

A series of biodegradable segmented liquid crystalline poly(ester-urethane)s were prepared by solution polymerization of poly(L-lactic acid) (PLLA), mesogenic diol prepolymer poly(butylene terephthaloyldioxy dibenzoates) (MD), and hexamethylene diisocyanate (HDI). The MD content was varied from 0 to 40 mol% so that the effects of the mesogen content on the thermal and physical properties, and hydrolytic degradation were examined respectively. It was found that introducing mesogens units could increase the thermal stability and the elastic properties, while reduced the phase transition temperatures and the hydrolytic degradation rate.

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