tThis study assesses the behaviour

tThis study assesses the behaviour of pea protein isolate (PPI) as a potential candidate forthe development of biobased plastic materials processed by injection moulding. Around30–40% of glycerol as plasticizer was required to obtain good processability of PPI/GL blendsto produce bioplastics. A mixing rheometer that allows recording of torque and temperatureduring mixing and a small-scale-plunger-type injection moulding machine were used toobtain PPI/GL blends and PPI-based bioplastics, respectively. Rheological and differentialscanning calorimetry measurements were made to guide the selection of suitable conditionsfor injection and moulding. For injection, we selected a temperature relatively close to themaximum of the loss tangent, but moderate enough to avoid crosslinking effects (50◦C), andfor moulding, a high temperature (130◦C) to favour crosslinking in the mould. An increasein the PPI/GL ratio leads to an enhancement of elastic bending and tensile properties ofbioplastic specimens, as well as an increase in their ability to absorb mechanical energybefore rupturing. On the other hand, the PPI/GL specimens become less transparent. Inaddition, water uptake of these bioplastics has been found to be very high and fast.© 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

ผลลัพธ์ (แอฟริกา) 1:

tWaarskynlik studie bepaal die gedrag van pea proteïen isoleer (PPI) as 'n potensiële kandidaat virdie ontwikkeling van biobased plastiese materiale verwerk deur spuitgieten. Around30-40% van gliserol as plastiseerder nodig was om goeie prosesseerbaarheid van PPI / GL blendsto produkte bioplastics bekom. A vermenging geïntroduceerd dat opname van wringkrag en temperatureduring meng en 'n klein skaal-suier-tipe spuit giet masjien kan gebruik toobtain PPI / GL versnitte en PPI-gebaseerde bioplastics, onderskeidelik. Rheologische en differentialscanning kalorimetrie metings gemaak is om die keuse van geskikte die voorwaardes vir inspuiting en giet lei. Vir inspuiting, ons het 'n temperatuur relatief naby aan themaximum van die verlies raaklyn, maar matige genoeg om kruisbinding effekte (50◦C) te vermy, andfor giet, 'n hoë temperatuur (130◦C) om kruisbinding in die vorm guns gekies. 'N increasein die PPI / GL verhouding lei tot 'n verbetering van die elastiese buiging en trek eienskappe ofbioplastic monsters, sowel as 'n toename in hul vermoë om meganiese energybefore skeuring absorbeer. Aan die ander kant, die monsters PPI / GL minder deursigtig. Inaddition, water opname van hierdie bioplastics is gevind baie hoog en vinnig te wees. © 2015 Die Instituut van Chemiese Ingenieurs. Gepubliseer deur Elsevier BV Alle regte voorbehou.