Structure-property relationship in PCL/starch blend compatibilized with starch-g-PCL copolymer

Choi, Eui-Jun; Kim, Chang-Hyeon; Park, Jung-Ki

doi:10.1002/(sici)1099-0488(19990901)37:17<2430::aid-polb14>3.0.co;2-4

Cited by 71 publications

(44 citation statements)

References 8 publications

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“…This rapidly expanding field is generating many exciting new materials with novel properties. Among the many kinds of candidates of biodegradable polymer, starch is one of the most promising materials as it is a versatile biopolymer with immense potential and low price for use in the non-food industries (Choi et al 1999). The nanocomposite materials display a significant improvement in the mechanical properties even at very low reinforcement content (Angles and Dufresne 2000).…”

Section: Introductionmentioning

confidence: 99%

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

et al. 2014

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The present work deals with the preparation of cotton linter nanowhiskers (CLNW) by acid hydrolysis and subsequent processing in a high-pressure homogenizer. Prepared CLNW were then used as a reinforcing material in thermoplastic starch (TPS), with an aim to improve its performance properties. Concentration of CLNW was varied as 0, 1, 2, 3, 4 and 5 wt% in TPS. TPS/CLNW nanocomposite films were prepared by solution-casting process. The nanocomposite films were characterized by tensile, differential scanning calorimetry, scanning electron microscopy (SEM), water vapor permeability (WVP), oxygen permeability (OP), X-ray diffraction and light transmittance properties. 3 wt% CLNW-loaded TPS nanocomposite films demonstrated 88 % improvement in the tensile strength as compared to the pristine TPS polymer film; whereas, WVP and OP decreased by 90 and 92 %, respectively, which is highly appreciable compared to the quantity of CLNW added. DSC thermograms of nanocomposite films did not show any significant effect on melting temperature as compared to the pristine TPS. Light transmittance (T r ) value of TPS decreased with increased content of CLNW. Better interaction between CLNW and TPS, caused due to the hydrophilic nature of both the materials, and uniform distribution of CLNW in TPS were the prime reason for the improvement in properties observed at 3 wt% loading of CLNW in TPS. However, CLNW was seen to have formed agglomerates at higher concentration as determined from SEM analysis. These nanocomposite films can have potential use in food and pharmaceutical packaging applications.

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Section: Introductionmentioning

confidence: 99%

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

et al. 2014

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“…Up to date, however, most of the biodegradable polymers cannot be used widely because of their economic and other considerations (Choi, Kim, & Park, 1999). So there is an urgent need to develop new biodegradable materials that have comparable properties with current polymeric materials at an equivalent cost.…”

Section: Introductionmentioning

confidence: 99%

“…So there is an urgent need to develop new biodegradable materials that have comparable properties with current polymeric materials at an equivalent cost. Among the many known biodegradable polymers, starch is one of the most promising materials for biodegradable plastics because of the abundant supply, low cost, renewability, biodegradability, and ease of chemical modifications (Choi et al, 1999;Mathew & Dufresne, 2002;Mohanty, Misra, & Hinrichsen, 2000). Incorporating plasticizers, such as water and/or polyalcohols, starch takes on thermoplastic properties and is called thermoplastic starch (TPS) or plasticized starch (PS) using technology already developed for the production of synthetic plastics (Carvalho, Job, Alves, Curvelo, & Gandini, 2003;Gaudin, Lourdin, Forssell, & Colonna, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Poor mechanical properties are apparent if the starch content is high (Avella et al, 2000). Introducing a reactive functional group on the PCL or starch phase, and adding compatibilizers in the blends both have been used to improve the compatibility (Avella et al, 2000;Choi et al, 1999;Mani, Tang, & Bhattacharya, 1998). In present work, we attempt to use PCL as soft segment material to synthesize a WPU containing hydrophilic groups, which can improve the adhesion with starch during the blending processing.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and properties of plasticized starch modified with poly(ε-caprolactone) based waterborne polyurethane

Cao

Chang

Huneault

2008

Carbohydrate Polymers

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Preparation and properties of plasticized starch modified with poly(ε-caprolactone) based waterborne polyurethane Cao, Xiaodong; Chang, Peter R.; Huneault, Michel A.Contact us / Contactez nous: nparc.cisti@nrc-cnrc.gc.ca. AbstractBiodegradable blends were prepared successfully from plasticized starch (PS) and poly(e-caprolactone)-based waterborne polyurethane (WPU) by casting and evaporation. The morphology, thermal behaviour, and mechanical properties of the films were investigated by means of wide-angle X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and tests of mechanical properties and water absorption. The results indicated that the blends had a good miscibility while the WPU content was lower than 20 wt% due to the hydrogen bonding interactions between the carboxyl, carbonyl, urethane groups of WPU and hydroxyl groups of starch, whereas the phase separation occurred with an increase of WPU content. Compared with pure PS, the tensile strength of the blend containing 10 wt% of WPU increased from 2.93 to 3.89 MPa. Moreover, the elongation at break of the blends significantly increased from 35% to 886% with WPU content increased from 0 to 50 wt%. It is worth noting that the water uptake of the PS/WPU blends also decreased because the presence of WPU in the PS matrix. Therefore, the WPU played an important role in improving the mechanical properties, and water resistance of the starch-based material.

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“…1,2 Among the many kinds of biodegradable polymers, starch is one of the most promising materials for biodegradable plastics because of its universality and low cost. 3,4 Thermoplastic starch (TPS) or plasticized starch (PS) can be made by incorporating plasticizers, such as water, glycerol, sorbitol, sugars, formamide, and other organics into starch. [5][6][7][8][9][10] PS has attracted considerable attention during the past decades and offers an interesting alternative for synthetic polymers where long-term durability is not needed and rapid degradation is desirable.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of plasticized starch/multiwalled carbon nanotubes composites

Cao

Chen

Chang

et al. 2007

J of Applied Polymer Sci

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A triple‐band multi‐input multi‐output (MIMO) antenna is presented.The proposed antenna consists of a C‐shaped monopole antenna that provides dual‐band resonant antenna. By protruding an L‐shaped parasitic strip on the ground plane, a third band as well as enhancement of the isolation between two ports in MIMO array is achieved. The proposed antenna can cover 2.1–2.6, 3.3–4, and 5.4–6 GHz, which are allocated for WLAN and WiMAX applications. The proposed triple‐band antenna structure is used in different two‐element MIMO arrays. Simulation results show that the S11, S12, and S22 of the MIMO arrays are independent of the position of the two‐element. The results show good S‐parameters, high peak gain and radiation efficiency, and stable radiation patterns among the triple‐band coverage. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1321–1325, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26799

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Structure-property relationship in PCL/starch blend compatibilized with starch-g-PCL copolymer

Cited by 71 publications

References 8 publications

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

Preparation of cotton linter nanowhiskers by high-pressure homogenization process and its application in thermoplastic starch

Preparation and properties of plasticized starch modified with poly(ε-caprolactone) based waterborne polyurethane

Preparation and properties of plasticized starch/multiwalled carbon nanotubes composites

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