Tensile and morphology properties of PLA/LNR blends modified with maleic anhydride grafted-polylactic acid and -natural rubber

Polylactic acid (PLA)/ Natural rubber (NR) in the presence of PLA grafted Maleic Anhydride (PLAGMA) as compatibilizer was prepared by the melting blend method. In attempt to achieve high performance of the blend, nanocomposites were formed by incorporating different ratio of carbon nanotube (CNT) in PLA/NR/PLAGMA blend. The effect of CNT content on mechanical properties was investigated. With increasing CNT content, Young’s modulus and flexural modulus were increased firstly and then decreased as CNT was further added. In other hand, impact strength was dropped as expected as the CNT loading was increased.

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Functionalization of cyclic natural rubber grafted maleic anhydride (cnr-g-ma) with variation of ma concentration, inisiator and reaction time

Jurnal Pendidikan Kimia ◽

10.24114/jpkim.v11i3.15736 ◽

2019 ◽

Vol 11 (3) ◽

pp. 87-94

Author(s):

Boy Chandra Sitanggang ◽

◽

Eddyanto Eddyanto ◽

Keyword(s):

Reaction Time ◽

Maleic Anhydride ◽

Natural Rubber

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Toughness Enhancement of Polylactic Acid by Employing Glycolyzed Polylactic Acid-Cured Epoxidized Natural Rubber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1025-1026.580 ◽

2014 ◽

Vol 1025-1026 ◽

pp. 580-584 ◽

Cited By ~ 1

Author(s):

Phrutsadee Sukpuang ◽

Mantana Opaprakasit ◽

Atitsa Petchsuk ◽

Pakorn Opaprakasit

Keyword(s):

Natural Rubber ◽

Polylactic Acid ◽

Epoxidized Natural Rubber ◽

Chemical Recycling ◽

Crosslinking Reaction ◽

Solvent Fractionation ◽

Elongation At Break ◽

Chemical Structures ◽

Internal Mixer ◽

Toughness Enhancement

Glycolyzed polylactic acid (GPLA)-cured epoxidized natural rubber (ENR) is developed for use as a toughening agent for PLA resin. GPLA is obtained from chemical recycling of PLA resin by a glycolysis reaction. GPLA-cured ENR is then prepared by the crosslinking reaction of ENR with GPLA in an internal mixer. Chemical structures of the cured products are characterized by solvent fractionation and thermogravimetric analysis (TGA). The cured ENR products are blended with PLA resin, by varying the cured ENR contents from 5 to 15% wt. Mechanical properties of the blends, and their toughening mechanisms are examined. The cured ENR materials has higher efficiency in improving toughness of PLA resin, compared to uncured ENR, likely due to their rubbery network nature and higher compatibility with the PLA matrix. The incorporation of 5% wt. GPLA-cured ENR also improves elongation at break with no adverse effect on tensile strength and modulus of PLA.

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Natural Rubber Composites Filled with Cereals Straw Modified with Acetic and Maleic Anhydride: Preparation and Properties

Journal of Polymers and the Environment ◽

10.1007/s10924-018-1285-5 ◽

2018 ◽

Vol 26 (10) ◽

pp. 4141-4157 ◽

Cited By ~ 9

Author(s):

Marcin Masłowski ◽

Justyna Miedzianowska ◽

Krzysztof Strzelec

Keyword(s):

Maleic Anhydride ◽

Natural Rubber ◽

Rubber Composites ◽

Natural Rubber Composites

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The Development of Thermostatically Biodegradable Composite

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.889.44 ◽

2021 ◽

Vol 889 ◽

pp. 44-49

Author(s):

Yeng Fong Shih ◽

Zheng Ting Chen ◽

Wei Lun Lin ◽

Po Chun Chiu ◽

Chin Hsien Chiang ◽

...

Keyword(s):

Tensile Strength ◽

Polyethylene Glycol ◽

Maleic Anhydride ◽

Impact Strength ◽

Polylactic Acid ◽

Deformation Temperature ◽

Thermal Deformation ◽

Biodegradable Composite ◽

New Type ◽

Polybutylene Succinate

The purpose of this research is to develop a new type of environmentally friendly container which has thermostatic effect and is biodegradable. This study is based on polylactic acid (PLA) and maleic anhydride grafted polybutylene succinate (MAPBS). Subsequently, the diatomite which adsorbed polyethylene glycol (PEG) was added to prepare a thermostatic biodegradable composite. The addition of MAPBS is to improve the compatibility between PLA and diatomite. In addition, the thermostatic effect, tensile strength, thermal deformation temperature and impact strength of the composite were investigated.

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Eco-Friendly Composites Based on Bitter Tea Oil Meal and Polylactic Acid

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.889.21 ◽

2021 ◽

Vol 889 ◽

pp. 21-26

Author(s):

Yeng Fong Shih ◽

Jia Yi Xu ◽

Nian Yi Wu ◽

Yu Ting Chiu ◽

Hui Ming Yu ◽

...

Keyword(s):

Tensile Strength ◽

Maleic Anhydride ◽

Impact Strength ◽

Polylactic Acid ◽

Food Industry ◽

Impact Resistance ◽

Experimental Results ◽

Polybutylene Succinate ◽

The Cost

Bitter tea oil meal (BTOM) is the main waste from the production of bitter tea oil which is squeezed from bitter tea seeds. The purpose of this study is to reuse the BTOM as an additive of the polylactic acid (PLA) to prepare eco-friendly composites. The effects of the addition of BTOM and maleic anhydride grafted polybutylene succinate (MAPBS) on the properties of PLA were investigated. The addition of MAPBS is mainly to increase the toughness of the PLA, and to increase the compatibility between BTOM and PLA. The experimental results show that the compatibility of PLA and BTOM and impact resistance of the composites can be improved by addition of MAPBS. The composite with 5% BTOM and 8% MAPBS exhibited the best tensile strength. In addition, the composite with 5% BTOM and 5% MAPBS has the best impact strength. It was found that the addition of BTOM and MAPBS can promote the crystallization of PLA. Moreover, the addition of BTOM not only can reduce the usage of PLA and the cost of the materials, but also reuse and reduce the waste from food industry.

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Effects of Methylenediphenyl 4,4’-Diisocyanate and Maleic Anhydride as Coupling Agents on the Properties of Polylactic Acid/Polybutylene Succinate/Wood Flour Biocomposites by Reactive Extrusion

Materials ◽

10.3390/ma13071660 ◽

2020 ◽

Vol 13 (7) ◽

pp. 1660

Author(s):

Young-Rok Seo ◽

Sang-U Bae ◽

Jaegyoung Gwon ◽

Qinglin Wu ◽

Birm-June Kim

Keyword(s):

Maleic Anhydride ◽

Polylactic Acid ◽

Viscoelastic Properties ◽

Interfacial Adhesion ◽

Wood Flour ◽

Flexural Modulus ◽

Reactive Extrusion ◽

Coupling Agents ◽

Polybutylene Succinate

Polylactic acid (PLA)/polybutylene succinate (PBS)/wood flour (WF) biocomposites were fabricated by in situ reactive extrusion with coupling agents. Methylenediphenyl 4,4’-diisocyanate (MDI) and maleic anhydride (MA) were used as coupling agents. To evaluate the effects of MDI and MA, various properties (i.e., interfacial adhesion, mechanical, thermal, and viscoelastic properties) were investigated. PLA/PBS/WF biocomposites without coupling agents revealed poor interfacial adhesion leading to deteriorated properties. However, the incorporation of MDI and/or MA into biocomposites showed high performances by increasing interfacial adhesion. For instance, the incorporation of MDI resulted in improved tensile, flexural, and impact strengths and an increase in tensile and flexural modulus was observed by the incorporation of MA. Specially, remarkably improved thermal stability was found in the PLA/PBS/WF biocomposites with 1 phr MDI and 1 phr MA. Also, the addition of MDI or MA into biocomposites increased the glass transition temperature and crystallinity, respectively. For viscoelastic property, the PLA/PBS/WF biocomposites with 1 phr MDI and 1 phr MA achieved significant enhancement in storage modulus compared to biocomposites without coupling agents. Therefore, the most balanced performances were evident in the PLA/PBS/WF biocomposites with the hybrid incorporation of small quantities of MDI and MA.

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