Rice Starch-Based Biodegradable Films: Properties Enhancement

Wittaya, Thawien

doi:10.5772/47751

Cited by 44 publications

(39 citation statements)

References 97 publications

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“…Recently, many studies have focused on the mechanical properties and environmental features of polymer composites with cellulose fillers. 1,[5][6][7][8][9] The thermomechanical properties of commodity thermoplastics such as polypropylene (PP), polyethylene, and poly(vinyl chloride) decrease with increasing temperature. [10][11][12][13][14] However, the addition of fillers such as wood flour or cellulose powder to thermoplastics can effectively improve their thermomechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Physical properties of polypropylene composites with hydrophobized cellulose powder by soybean oil

Jang

Kim

2015

J of Applied Polymer Sci

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Cellulose materials have attracted lots of interest as potential natural fillers in the production of green polymer composites because they are ecofriendly and economic. In this study, to improve the interfacial bonding strength between cellulose powder and a hydrophobic polypropylene (PP) matrix, the surface hydrophobization of cellulose powder by soybean oil was carried out via a simple transesterification reaction procedure. Weight change measurements, Fourier transform infrared spectroscopy, and compatibility testing were used to quantitatively and qualitatively analyze the hydrophobization of the cellulose powder. By changing the hydrophobization conditions, the soybean oil content attached to the cellulose powder changed from 8.0 to 57.8%. PP composites with 20% of each hydrophobized cellulose powder were prepared by melt blending followed by compression molding. The mechanical properties of the PP composites were investigated with a universal testing machine and an Izod impact tester. Compared to the composite with pristine cellulose powder, the PP composite with the hydrophobized cellulose powder and an attached soybean oil content of 29.6% showed largely increased impact strength (46.3%), tensile strength (47.5%), and elongation at break (27.3%) values. The scanning electron microscopy images for the fracture surfaces of the composites showed that the hydrophobization induced much stronger interfacial bonding between the PP matrix and cellulose powder.

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Section: Introductionmentioning

confidence: 99%

Physical properties of polypropylene composites with hydrophobized cellulose powder by soybean oil

Jang

Kim

2015

J of Applied Polymer Sci

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“…Amilopektin, genel olarak nişastayı oluşturan en büyük bileşendir. Bununla birlikte nişastanın yapısında az miktarda; lipid, fosfolipid ve fosfat monoester türevleri de bulunmaktadır (Wittaya 2012 (Wüstenberg 2014), (Woodings 2001).…”

Section: Biyopolimerlerunclassified

Green Polymers and Applications

Yoruç¹,

Uğraşkan²

2017

AKU-J. Sci. Eng.

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Anahtar kelimeler Biyopolimerler Endüstriyel polimerler Ambalaj sektörü Doğal ve sürdürülebilir kaynaklar Özet Polimerler; istenilen özellikte sentezlenebilme, kolay işlenebilme, korozyona uğramama, hafiflik ve düşük maliyete sahip olma gibi özelliklere sahip gelişmiş materyallerdir. Sahip oldukları bu özellikler sayesinde polimerler, endüstride birçok kullanım alanı bulmuştur ve bu alanlar gün geçtikçe artmaktadır. Endüstriyel polimerler göstermiş oldukları yüksek potansiyel ve özelliklerin aksine, doğal bir süreç ile yok edilememesi sonucu kirlilik oluşturmakta ve ancak maliyetli parçalanma işlemleri sonucunda bertaraf edilebilmektedir. Bununla birlikte, petrol kaynakları gibi tükenir kaynaklardan elde edilmeleri, polimer sektöründe süreklilik ve çevre uyumu açısından yeni arayışlara yol açmıştır. Biyopolimerler, endüstriyel polimerlerin tükenir kaynaklardan elde edilmeleri ve bertarafının zor olması gibi dezavantajları sonucu, başta ambalaj sektörü olmak üzere birçok alanda alternatif materyal olarak ön plana çıkmıştır. Doğal ve sürdürülebilir kaynaklardan elde edilen biyopolimerler, mekanik ve termal özellikleri sayesinde endüstriyel polimerlerin taşıdığı özelliklere eşdeğer özelliklerde olup; biyopolimerlerin ilerleyen yıllarda polimer endüstrisinde önemli bir yere sahip olacağı öngörülmektedir. Bu derleme çalışmasında biyopolimerin çeşitleri hakkında bilgiler verilmiş ve sektörlere göre kullanım alanları incelenmiştir.

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“…The addition of fillers can have miscellaneous effect on the mechanical properties of such composites. They depend on the nature of the filler, its amount, and particle size [22][23][24][25][26][27][28]. In order to estimate the influence of the amount of rapeseed cake and crude glycerol on the mechanical properties the composites with the different ratio of starch and rapeseed cake were prepared ( Table 2).…”

Section: Tensile Propertiesmentioning

confidence: 99%

Film-Forming Starch Composites for Agricultural Applications

2011

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Biodegradable polymer composites were prepared from starch, crude glycerol, rapeseed cake and urea. The uniform films of the composites were prepared by casting technique. Mechanical properties and solubility in water of the films were studied. Increase of the content of rapeseed cake in the composites lead to the decrease of tensile strength and to the increase of elongation at break. The solubility of the composites in water increased with the increase of the content of rapeseed cake and urea. The changes of pH of soil being in the contact with the composite films were studied. It was established that the composites with the ratio of starch, rapeseed cake, crude glycerol and urea ranging from 4:6:3:0.2 to 4:6:3:1 can be used for the production of disposable plant pots. Too high content of urea can increase pH of soil up to the limit dangerous for plants.

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Rice Starch-Based Biodegradable Films: Properties Enhancement

Cited by 44 publications

References 97 publications

Physical properties of polypropylene composites with hydrophobized cellulose powder by soybean oil

Physical properties of polypropylene composites with hydrophobized cellulose powder by soybean oil

Green Polymers and Applications

Film-Forming Starch Composites for Agricultural Applications

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