Thermoplastic Starch (TPS)/Polylactic Acid (PLA) Blending Methodologies: A Review

Villadiego, Keydis Martinez; Tapia, Mary Judith Arias; Useche, J.; Macías, Daniela Escobar

doi:10.1007/s10924-021-02207-1

Cited by 81 publications

(81 citation statements)

References 134 publications

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“…PLA is a thermoplastic, biodegradable polymer derived from renewable bio-resources, such as corn, sugar beet and potato starch. The PLA/thermoplastic starch blends are becoming more attractive because of their promising developments for applications in food packaging and biomedicine [ 27 ]. PLA or PLA/TPS can be extruded from PLA pellets or TPS, PLA pellet mixtures [ 29 ].…”

Section: Methodsmentioning

confidence: 99%

“…Membranes were separated from the sacrificial templates by submerging in aqueous solutions for a short time; alleviating the need for mechanical demolding reduces risks of permanently distorting or breaking the membrane. We used both polyvinyl alcohol (PVA) and biodegradable polylactic acid (PLA)/thermoplastic starch blends [ 27 , 28 ] as sacrificial templates. The intermediate templates were fabricated by hot-embossing PLA sheets extruded from PLA pellets.…”

Section: Introductionmentioning

confidence: 99%

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Facile Fabrication of Flexible Polymeric Membranes with Micro and Nano Apertures over Large Areas

Hernández-Castro²,

Morton

et al. 2022

Polymers

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Freestanding, flexible and open through-hole polymeric micro- and nanostructured membranes were successfully fabricated over large areas (>16 cm2) via solvent removal of sacrificial scaffolds filled with polymer resin by spontaneous capillary flow. Most of the polymeric membranes were obtained through a rapid UV curing processes via cationic or free radical UV polymerisation. Free standing microstructured membranes were fabricated across a range of curable polymer materials, including: EBECRYL3708 (radical UV polymerisation), CUVR1534 (cationic UV polymerisation) UV lacquer, fluorinated perfluoropolyether urethane methacrylate UV resin (MD700), optical adhesive UV resin with high refractive index (NOA84) and medical adhesive UV resin (1161-M). The present method was also extended to make a thermal set polydimethylsiloxane (PDMS) membranes. The pore sizes for the as-fabricated membranes ranged from 100 µm down to 200 nm and membrane thickness could be varied from 100 µm down to 10 µm. Aspect ratios as high as 16.7 were achieved for the 100 µm thick membranes for pore diameters of approximately 6 µm. Wide-area and uniform, open through-hole 30 µm thick membranes with 15 µm pore size were fabricated over 44 × 44 mm2 areas. As an application example, arrays of Au nanodots and Pd nanodots, as small as 130 nm, were deposited on Si substrates using a nanoaperture polymer through-hole membrane as a stencil.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Flexible Polymeric Membranes with Micro and Nano Apertures over Large Areas

Hernández-Castro²,

Morton

et al. 2022

Polymers

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show abstract

“…Researchers have sought to address the problems presented by PLA and improve its comprehensive properties by chemical modification and physical blending [ 23 , 24 ]. The molecular structure of polyurethane is highly tailorable, and its glass transition temperature ( T g ) and other properties can be controlled by adjusting the proportion of soft and hard segments, as well as the types and molecular weights of the soft segments [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Bio-Based Polyurethane and Its Composites towards High Damping Properties

et al. 2022

IJMS

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The operation of mechanical equipment inevitably generates vibrations and noise, which are harmful to not only the human body but also to the equipment in use. Damping materials, which can convert mechanical energy into thermal energy, possess excellent damping properties in the glass transition region and can alleviate the problems caused by vibration and noise. However, these materials mainly rely on petroleum-based resources, and their glass transition temperatures (Tg) are lower than room temperature. Therefore, bio-based materials with high damping properties at room temperature must be designed for sustainable development. Herein, we demonstrate the fabrication of bio-based millable polyurethane (BMPU)/hindered phenol composites that could overcome the challenges of sustainable development and exhibit high damping properties at room temperature. BMPUs with a high Tg were prepared from modified poly (lactic acid)-based polyols, the unsaturated chain extender trimethylolpropane diallylether, and 4,4′-diphenylmethane diisocyanate, and 3,9-Bis-{1,1-dimethyl-2[β-(3-tert-butyl-4-hydroxy-5-methylphenyl-)propionyloxy]ethyl}-2,4,8,10-tetraoxaspiro [5,5]-undecane (AO-80) was added to prepare BMPU/AO-80 composites. Finally, the properties of the BMPUs and BMPU/AO-80 composites were systematically evaluated. After adding 30 phr of AO-80, the Tg and maximum loss factor (tan δmax) of BMPU/AO-80 composites increased from 7.8 °C to 13.5 °C and from 1.4 to 2.0, respectively. The tan δmax showed an improvement of 43%. Compared with other polyurethanes, the prepared BMPU/AO-80 composites exhibited higher damping properties at room temperature. This study proposes a new strategy to reduce society’s current dependence on fossil resources and design materials featuring high damping properties from sustainable raw materials.

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“…Therefore, research and industrial environments seek other, more cost-effective solutions for manufacturing bio-based sustainable polymer materials. Among them are blends with biopolymers, mainly starch, which due to its low cost and hardly limited availability, is an auspicious solution for manufacturing sustainable materials [ 12 , 13 , 14 , 15 ]. However, to be processed by conventional methods applied in polymer technology requires proper modifications, notably the conversion to thermoplastic starch (TPS), which significantly reduces its melting point [ 13 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Mater-Bi/Brewers’ Spent Grain Biocomposites—Novel Approach to Plant-Based Waste Filler Treatment by Highly Efficient Thermomechanical and Chemical Methods

et al. 2022

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Thermoplastic starch (TPS) is a homogenous material prepared from native starch and water or other plasticizers subjected to mixing at a temperature exceeding starch gelatinization temperature. It shows major drawbacks like high moisture sensitivity, poor mechanical properties, and thermal stability. To overcome these drawbacks without significant cost increase, TPS could be blended with bio-based or biodegradable polymers and filled with plant-based fillers, beneficially waste-based, like brewers’ spent grain (BSG), the main brewing by-product. Filler modifications are often required to enhance the compatibility of such composites. Herein, we investigated the impact of BSG thermomechanical and chemical treatments on the structure, physical, thermal, and rheological performance of Mater-Bi-based composites. Thermomechanical modifications enhanced matrix thermal stability under oxidative conditions delaying degradation onset by 33 °C. Moreover, BSG enhanced the crystallization of the polybutylene adipate terephthalate (PBAT) fraction of Mater-Bi, potentially improving mechanical properties and shortening processing time. BSG chemical treatment with isophorone diisocyanate improved the processing properties of the composites, expressed by a 33% rise in melt flow index. Depending on the waste filler’s selected treatment, processing, and rheological performance, thermal stability or interfacial adhesion of composites could be enhanced. Moreover, the appearance of the final materials could be adjusted by filler selection.

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Thermoplastic Starch (TPS)/Polylactic Acid (PLA) Blending Methodologies: A Review

Cited by 81 publications

References 134 publications

Facile Fabrication of Flexible Polymeric Membranes with Micro and Nano Apertures over Large Areas

Facile Fabrication of Flexible Polymeric Membranes with Micro and Nano Apertures over Large Areas

Bio-Based Polyurethane and Its Composites towards High Damping Properties

Mater-Bi/Brewers’ Spent Grain Biocomposites—Novel Approach to Plant-Based Waste Filler Treatment by Highly Efficient Thermomechanical and Chemical Methods

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