Properties of blends of starch, polyethylene and poly(ethylene-co-acrylic acid) copolymer

Jeziórska, Regina; Żakowska, Z.; Stolbińska, H.; Ratajska, M.; Zielonka, M.

doi:10.14314/polimery.2003.211

Cited by 3 publications

(3 citation statements)

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“…Consequently, it is incompatible with the hydrophilic soya powder. As such, various compatibilizers have been used to improve the interfacial adhesion between PE and polysaccharides or protein‐based natural polymer such as polyethylene‐grafted maleic anhydride (PE‐ g ‐MA),11, 12 ethylene acrylic acid copolymer,13–15 and ethylene‐vinyl acetate copolymer 16…”

Section: Introductionmentioning

confidence: 99%

Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low‐density polyethylene/soya powder blends

Sam

Ismail

Ahmad

et al. 2011

J of Applied Polymer Sci

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Linear low-density polyethylene/soya powder blends were prepared by using an internal mixer at 150 C. The soya powder content ranged from 5 to 40 wt %. Epoxidized natural rubber with 50 mol % epoxidation (ENR 50) was added as a compatibilizer. The blends were irradiated by electron beam (EB) at a constant dose of 30 kGy. The changes in gel fraction, tensile properties, morphological and thermal properties of the samples were investigated. The gel content increased after EB irradiation. However, the increment of gel content was hindered by increasing soya powder content. The tensile strength and Young's modulus of the blends were increased by EB whereas the elongation at break decreased. The tensile frac-ture surface also support the reduction of elongation at break by EB irradiation. Further analysis on the irradiated blends using Fourier transform infrared spectra indicated an increase of oxygenated product after undergoing EB irradiation. The differential scanning calorimetry result indicated that the melting temperature of the blends decreased after EB irradiation whereas the crystallinity increased. EB irradiation also enhanced the thermal stability of the blends as indicated by thermogravimetric analysis. V C 2011 Wiley Periodicals, Inc. J Appl Polym Sci 124: 5220-5228, 2012

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Section: Introductionmentioning

confidence: 99%

Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low‐density polyethylene/soya powder blends

Sam

Ismail

Ahmad

et al. 2011

J of Applied Polymer Sci

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“…Preparat skrobiopochodny jest u¿ywany zamiast syntetycznego czêsto ze wzglêdów ekologicznych, zw³aszcza w przypadku flokulantów skrobiowych [2]. Równie¿ ze wzglêdu na ochronê oerodowiska intensywnie rozwijana jest technologia tworzyw polimero-wych nape³nionych skrobi¹ [3][4][5][6][7]. Jednoczeoenie s¹ prowadzone badania nad niekonwencjonalnymi metodami przetwórstwa skrobi, w których wykorzystuje siê reaktywne wyt³aczanie [8] lub energiê promieniowania mikrofalowego [9,10].…”

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Effect of urea, sodium nitrate and ethylene glycol addition on the rheological properties of corn starch pastes

et al. 2015

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Zbadano wp³yw substancji pomocniczych stosowanych w produkcji klejów skrobiowych na przebieg kleikowania oraz w³aoeciwooeci reologiczne natywnej skrobi kukurydzianej. Zawiesiny natywnej skrobi kukurydzianej, odmiany koñski z¹b, poddawano kleikowaniu w wiskografie RVA, a nastêpnie umieszczano w cylindrze pomiarowym reometru HAAKE i badano lepkooeae w trybie kontrolowanej szybkooeci oecinania (CR). Do sporz¹dzania zawiesin skrobiowych stosowano wodê destylowan¹, roztwory mocznika, azotanu(V) sodu i glikolu etylenowego. Gotowe kleiki analizowano metod¹ rozmazu mikroskopowego, po wybarwieniu za pomoc¹ p³ynu Lugola. Stwierdzono, ¿e dodatek mocznika powoduje obni¿enie temperatury kleikowania, zmianê kszta³tu krzywej kleikowania skrobi oraz wzrost lepkooeci koñcowej otrzymanego kleiku. Stwierdzono, ¿e dodatek azotanu(V) sodu powoduje wyd³u¿enie czasu kleikowania i stabilizuje lepkooeae. Glikol etylenowy dodany do zawiesiny wywiera mniejszy wp³yw na kleikowanie skrobi ni¿ mocznik i azotan. Skrobia kukurydziana tworzy kleiki lub zawiesiny rozrzedzane oecinaniem, których w³aoeciwooeci reologiczne wyraŸnie zmieniaj¹ siê w czasie.S³owa kluczowe: skrobia kukurydziana, w³aoeciwooeci reologiczne, mocznik, azotan(V) sodu, glikol etylenowy. Effect of urea, sodium nitrate and ethylene glycol addition on the rheological properties of corn starch pastes

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“…Powszechne stosowanie polietylenu w gospodarce i wynikaj¹cy z tego du¿y jego udzia³ w odpadach sk³adowanych na wysypiskach oraz niewielka wra¿liwooeae na degraduj¹cy wp³yw czynników oerodowiska naturalnego s¹ przyczyn¹ wielu prób modyfikowania w³aoeciwooeci tego polimeru w celu przyspieszenia jego pou¿ytkowej degradacji [1][2][3][4][5][6][7][8][9][10]. Jak wskazuj¹ badania, wprowadzenie do polimeru substancji wra¿liwej na dzia³anie wybranego czynnika otoczenia mo¿e w zadowalaj¹cym stopniu przyspieszyae rozk³ad tworzywa.…”

unclassified

Modification of low density polyethylene with allylurea

2004

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Modyfikacja polietylenu ma³ej gêstooeci allilomocznikiemMODIFICATION OF LOW DENSITY POLYETHYLENE WITH ALLYLUREA Summary -Modification of low-density polyethylene (PE-LD) with allylurea (AM) by reactive extrusion in the presence of dicumyl peroxide (DCP) as radical initiator of the expected grafting reaction has been described. Modification has been done in order to increase PE-LD susceptibility to degradation in the environment. FT-IR investigations showed the probability of the intermolecular AM condensation during processing at the conditions applied (Figs. 2, 3). The changes found should not impede the process of AM grafting. The slip of extruder screw, caused by AM, has been limited by addition of silica (K) to the composition. Composition properties have been studied in wide range of concentrations of silica (up to 8 wt. %), allylurea (up to 8 wt. %) and peroxide (up to 0.6 wt. %). The material showing good breaking strength was obtained when silica content in the composition (equal to AM content) was 3 wt. %. Gel number of various compositions was also determined. The samples obtained at small amounts of DCP, up to 0.2 wt. %, showed required low crosslinking degree (Table 1). FT-IR analysis suggests the partial grafting of allylurea onto PE chains (Table 2).

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Properties of blends of starch, polyethylene and poly(ethylene-co-acrylic acid) copolymer

Cited by 3 publications

References 0 publications

Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low‐density polyethylene/soya powder blends

Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low‐density polyethylene/soya powder blends

Effect of urea, sodium nitrate and ethylene glycol addition on the rheological properties of corn starch pastes

Modification of low density polyethylene with allylurea

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