Water Absorption and Hygrothermal Aging Behaviors of SEBS-g-MAH Toughened Poly(lactic acid)/Halloysite Nanocomposites

This research covers the preparation of poly(lactic acid) (PLA)/sugarcane leaves fibre (SLF) biofilms via a solvent-casting method. The results showed that the tensile strength and Young’s modulus of PLA/SLF biofilms increased with the increasing of SLF content. Nevertheless, the elongation at break showed an opposite trend as compared to tensile strength and Young’s modulus of biofilms. Moreover, water absorption properties of PLA/SLF biofilms increased with the increasing of SLF content. In contrast, the tensile strength and Young’s modulus of biofilms were enhanced after bleaching treatment with hydrogen peroxide on SLF, but the elongation at break and water absorption properties of bleached biofilms were reduced due to the improvement of filler–matrix adhesion in biofilms. The tensile and water properties were further discussed using B-factor and Fick’s law, respectively. Furthermore, the functional groups of unbleached and bleached SLF were characterized by Fourier transform infrared analysis.

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Mechanical Properties and Water Absorption Behaviour of Durian Rind Cellulose Reinforced Poly(lactic acid) Biocomposites

International Journal on Advanced Science Engineering and Information Technology ◽

10.18517/ijaseit.5.5.574 ◽

2015 ◽

Vol 5 (5) ◽

pp. 343 ◽

Cited By ~ 9

Author(s):

Patpen Penjumras ◽

Russly Abdul Rahman ◽

Rosnita A. Talib ◽

Khalina Abdan

Keyword(s):

Mechanical Properties ◽

Lactic Acid ◽

Water Absorption ◽

Poly Lactic Acid ◽

Durian Rind

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Investigation of Mechanical Behaviour on Bagasse/Basalt Reinforced Poly Lactic Acid Hybrid Composites: Tensile, Flexural, Impact and Water Absorption

Journal of Advanced Microscopy Research ◽

10.1166/jamr.2018.1362 ◽

2018 ◽

Vol 13 (1) ◽

pp. 85-91 ◽

Cited By ~ 3

Author(s):

M. Francis Luther King ◽

A. Arul Jeyakumar ◽

V. Srinivasan

Keyword(s):

Lactic Acid ◽

Water Absorption ◽

Mechanical Behaviour ◽

Hybrid Composites ◽

Poly Lactic Acid

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Strength, Durability and Degradation Properties of Bioplates Produced from Durian Seed Mixed with Poly(Lactic Acid)

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.858.157 ◽

2020 ◽

Vol 858 ◽

pp. 157-162

Author(s):

Naruebodee Srisang ◽

Siriwan Srisang

Keyword(s):

Tensile Strength ◽

Lactic Acid ◽

Water Absorption ◽

Production Condition ◽

Agricultural Waste ◽

Poly Lactic Acid ◽

High Tensile Strength ◽

Temperature And Pressure ◽

Degradation Properties ◽

Durian Seed

In this study, durian seed was used to mix with poly (lactic acid), PLA for bioplates production. Durian seeds were prepared to peel off the brown skin on durian seed and then were dried. It was called brown skin durian (BSD). BSD was reduced the size below 1 mm. The mixtures between BSD and PLA were varied at 10:90, 20:80, 30:70 g/g. All mixtures were compressed into bioplates mold with varying the temperature at 90, 110, and 130 °C and the pressure at 2.0, 2.7, and 3.4 MN/m2. Bioplates sample were also investigated the properties in term of water absorption, tensile strength, and degradation. Results showed that the optimal mixture between BSD and PLA was 30:70 g/g and the suitable production condition presented the temperature and pressure at 130 °C and 3.4 MN/m2, respectively. These conditions provided low water absorption, high tensile strength and provided the proper degradation within 7 days. Hence, agricultural waste (durian seed) can be combined with PLA to produce the bio-container as bioplates which presented the potential to use in waste management.

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Bio-nanocomposites based on compatibilized poly(lactic acid) blend-reinforced agave cellulose nanocrystals

BioResources ◽

10.15376/biores.16.3.5538-5555 ◽

2021 ◽

Vol 16 (3) ◽

pp. 5538-5555

Author(s):

Noor Afizah Rosli ◽

Wan Hafizi Wan Ishak ◽

Siti Salwani Darwis ◽

Ishak Ahmad ◽

Mohammad Fauzul Azim Mohd Khairudin

Keyword(s):

Lactic Acid ◽

Water Absorption ◽

Cellulose Nanocrystals ◽

Tensile Modulus ◽

Crystallization Rate ◽

Tensile Tests ◽

Absorption Capacity ◽

Poly Lactic Acid ◽

Mechanical And Thermal Properties ◽

Green Materials

Enhancing the mechanical, thermal, and degradation properties of a poly(lactic acid) (PLA) blend without deteriorating its other useful features was the goal of this work. The isolation of cellulose nanocrystals (CNCs) from Agave angustifolia fibers was carried out, and the properties of the bio-nanocomposites comprising these CNCs were evaluated, which included PLA, natural rubber (NR), and liquid NR (LNR). Transmission electron microscopy and zeta potential analysis confirmed the successful isolation of CNCs from agave fibers after several chemical treatment steps. The effects of different CNC loadings on the properties of the bio-nanocomposites were investigated using tensile tests, thermal analysis, morphological analysis, and water absorption tests. Bio-nanocomposites containing 5 wt% and 7.5 wt% CNC had the optimal tensile modulus and strength, respectively. Different levels of CNC did not noticeably affect the thermal stability of the bio-nanocomposites, although the thermogram curves increased slightly as CNC content increased. The addition of CNC at different loadings affects the crystallization rate of PLA blend. The water absorption capacity increased as CNC level increased, and 5 wt% CNC gave rise to the highest water absorption. The four-component bio-nanocomposites created in this study provided an alternative for producing new green materials with tunable physical, mechanical, and thermal properties.

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Water Absorption and Thermomechanical Characterization of Extruded Starch/Poly(lactic acid)/Agave Bagasse Fiber Bioplastic Composites

International Journal of Polymer Science ◽

10.1155/2015/343294 ◽

2015 ◽

Vol 2015 ◽

pp. 1-7 ◽

Cited By ~ 10

Author(s):

F. J. Aranda-García ◽

R. González-Núñez ◽

C. F. Jasso-Gastinel ◽

E. Mendizábal

Keyword(s):

Lactic Acid ◽

Water Absorption ◽

Impact Resistance ◽

Thermoplastic Starch ◽

Thermomechanical Behavior ◽

Poly Lactic Acid ◽

Content Increase ◽

Fiber Fracture ◽

Bagasse Fiber

Water absorption and thermomechanical behavior of composites based on thermoplastic starch (TPS) are presented in this work, wherein the concentration of agave bagasse fibers (ABF, 0–15 wt%) and poly(lactic acid) (PLA, 0–30 wt%) is varied. Glycerol (G) is used as starch (S) plasticizer to form TPS. Starch stands as the polymer matrix (70/30 wt/wt, S/G). The results show that TPS hygroscopicity decreases as PLA and fiber content increase. Storage, stress-strain, and flexural moduli increase with PLA and/or agave bagasse fibers (ABF) content while impact resistance decreases. The TPS glass transition temperature increases with ABF content and decreases with PLA content. Micrographs of the studied biocomposites show a stratified brittle surface with a rigid fiber fracture.

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