Biodegradation of starch/polylactic acid/poly(hydroxyester-ether) composite bars in soil

Shogren, Randal L.; Doane, W. M.; Garlotta, Donald; Lawton, John W.; Willett, J. L.

doi:10.1016/s0141-3910(02)00356-7

Cited by 226 publications

(101 citation statements)

References 22 publications

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“…Water absorption of poly (lactic acid)/starch blends increased with dioctyl maleate concentration. Other compatibilizers were also studied for the starch/poly (lactic acid) blends, such as poly (vinyl alcohol) [145] and poly(hydroxyester ether) [146] it was added to a starch and poly (lactic acid) blend (50/50, w/w) to enhance compatibility and improve mechanical properties.…”

Section: Starch Nanocompositesmentioning

confidence: 99%

Nanotechnology and its applications in lignocellulosic composites, a mini review

Kamel¹

2007

Express Polym. Lett.

237

109

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Abstract. Nanotechnology has applications across most economic sectors and allows the development of new enabling science. The ability to see materials down to nanoscale dimensions and to control how materials are constructed at the nanoscale is providing the opportunity to develop new materials and products in previously unimagined ways. This review covers the academic and industrial aspects of the preparation, characterization, material properties, crystallization behavior; melt rheology, and processing of polymer/cellulose or cellulose/cellulose nanocomposites. Cellulosic materials have a great potential as nanomaterials because they are abundant, renewable, have a nanofibrillar structure, can be made multifunctional, and self-assemble into well-defined architectures. The fibrillation of pulp fiber to obtain nano-orderunit web-like network structure, called microfibrillated cellulose, is obtained through a mechanical treatment of pulp fibers, consisting of refining and high pressure homogenizing processes. Also, nano-whisker can be used as novel reinforcement in nanocomposites; it can be obtained by acid hydrolysis from various sources such as wood, tunicin, ramie, cotton, wheat straw, bacterial cellulose, and sugar beet. The properties of nanocomposite materials depend not only on the properties of their individual parents, but also on their morphology and interfacial characteristics. Compared with plant cellulose, bacterial cellulose has found many applications in the biomedical field as tissue engineering materials due to their good biocompatibility, mechanical properties similar to those of hard and soft tissue and easy fabrication into a variety of shapes with adjustable interconnected porosity. One of the drawbacks of cellulose whiskers with polar surfaces is poor dispersibility/compatibility with nonpolar solvents or resins. Thus, their incorporation as reinforcing materials for nanocomposites has so far been largely limited to aqueous or polar systems. To overcome this problem and broaden the type of possible polymer matrices, efforts of surface modification have been made. These attempts include surfactant coating or graft copolymerization.

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Section: Starch Nanocompositesmentioning

confidence: 99%

Nanotechnology and its applications in lignocellulosic composites, a mini review

Kamel¹

2007

Express Polym. Lett.

237

109

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“…5,6 The biodegradable PLA has attracted increasing attention as a candidate for us in industrial applications since it possesses excellent mechanical properties (especially in tensile strength and modulus) and is produced with corn or other starches as the starting raw material. [7][8][9] With these advantages, PLA is a versatile material with applications in the medical, textile, and packaging fields. However, PLA is rigid and brittle at room temperature due to its glass transition temperature (T g ) close to 55 o C, which limiting its melt processability and its end-use mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Thermal Properties and Rheological Behavior of PLA/PCL Blends for Melt-blown Nonwovens

Sun¹,

Yu²,

Hán³

et al. 2014

Polymer Korea

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Poly(lactic acid) (PLA) and poly(ε-caprolactone) (PCL) blends with various components for melt-blown nonwovens were prepared by a twin-screw extruder. Tributyl citrate (TBC) was added in order to improve the miscibility between PLA and PCL. The results showed that small circular particles of PCL were dispersed in PLA matrix uniformly. The addition of PCL had the heterogeneous nucleation effect on the crystallization of PLA and decreased thermal stability of PLA. The flow of pure PLA and blends approached to Newtonian liquid at a low shear rate and expressed more obvious viscoelasticity at a high shear rate.

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“…disposal, incineration, low-level reutilization, and recycling) have been investigated for waste PLA disposal. Most studies of the degradation of PLA have focused on biodegradation in soil 8 or compost 9 and thermal degradation in nitrogen 10 -13 ; however, waste PLA is generally collected along with municipal solid waste and then incinerated. Thus, the thermal degradation behavior of PLA should be investigated.…”

Section: Introductionmentioning

confidence: 99%

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

Chien

Liang

Liu

et al. 2010

Journal of the Air & Waste Management Association

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This study investigates the combustion kinetics and emission factors of 16 U.S. Environmental Protection Agency priority polycyclic aromatic hydrocarbons (PAHs) in polylactic acid (PLA) combustion. Experimentally, two reactions are involved in the PLA combustion process that potentially result in the release of lactide, acetaldehyde, and n-hexaldehyde. The products may continuously be oxidized to form carbon dioxide (CO 2 ) and some PAHs produced because of incomplete combustion. The analytical results indicate that the emission factors for PAHs are in the range of not detectable to 98.04 g/g. The emission factors are much lower than those of poly(ethylene terephalate) (PET) and other combustion of plastics. Results from this work suggest that combustion is a good choice for waste PLA disposal.

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Biodegradation of starch/polylactic acid/poly(hydroxyester-ether) composite bars in soil

Cited by 226 publications

References 22 publications

Nanotechnology and its applications in lignocellulosic composites, a mini review

Nanotechnology and its applications in lignocellulosic composites, a mini review

Microstructure, Thermal Properties and Rheological Behavior of PLA/PCL Blends for Melt-blown Nonwovens

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

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