scholarly journals Mechanical and Optical Properies of Poly Lactic Acid Modified Linear- Low Density Polyethylene / Low Density Polyethylene (Lldpe/Ldpe) Blend Blown Film

2012 ◽  
pp. 122-125
Author(s):  
Omveer Singh ◽  
Pradeep Upadhyaya ◽  
T.k Mishra ◽  
Navin Chand
Keyword(s):  
Lactic Acid ◽  
Polylactic Acid ◽  
Low Density Polyethylene ◽  
Poly Lactic Acid ◽  
Low Density ◽  
Melt Blending ◽  
Linear Low Density Polyethylene ◽  
Blown Film ◽  
Twin Screw ◽  
Poly Ethylene

Poly lactic acid (PLA) is well known aliphatic poly-esters derived from corn and sugar beets, and degrades into nontoxic compounds in landfill. Melt blending of poly lactic acid and linear low density polyethylene (LLDPE) was performed in an effort to toughen polylactic acid. Melt blending of linear low density polyethylene (LLDPE) and polylactic Acid (PLA) and Low density poly ethylene (LDPE) were performed in a twin screw extruder with post extrusion blown film. The blend compositions were optimized by mechanical properties. On the basis of this, LLDPE 80 wt % LDPE 20 wt% and 1-4 wt% poly lactic acid (PLA) were found to be an optimum composition. The blends were characterized according to their mechanical and optical behavior. This blend may be used for packaging application.

Phase Structure of Compatibilized Poly(Lactic Acid)/Linear Low-Density Polyethylene Blends

2009 ◽  
Vol 48 (4) ◽  
pp. 823-833 ◽  
Author(s):  
Zhizhong Su ◽  
Qiuying Li ◽  
Yongjun Liu ◽  
Haiyan Xu ◽  
Weihong Guo ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Phase Structure ◽  
Low Density Polyethylene ◽  
Poly Lactic Acid ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Polyethylene Blends

Study on the Crystallinity and Mechanical Properties of PC/PLA/LLDPE/ Montmorillonite Blends

2013 ◽  
Vol 739 ◽  
pp. 38-41
Author(s):  
Yi Chen ◽  
Yue Peng ◽  
Wen Yong Liu ◽  
Guang Sheng Zeng ◽  
Xiang Gang Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Impact Strength ◽  
High Performance ◽  
Impact Resistance ◽  
Low Density Polyethylene ◽  
Poly Lactic Acid ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Elongation At Break

Polycarbonate/poly (lactic acid)/(PC/PLA) blend is a kind of novel potential material for introducing the degradability of PLA to high performance PC. However, the bad compatibility between PC and PLA results in poor impact resistance and strength, which limits its applications. For resolving the problem, linear low density polyethylene (LLDPE) was added into blend to improve the mechanical properties, especially the toughness. Meantime, nanosized montmorillonite was also used as an additive for modifying the blend. The results showed that the the tensile and impact strength, the elongation at break of PC/PLA all be improved with the increase of LLDPE, the nanosized montmorillonite could also increase the strength of blends when the content is lower than wt5% of blends.

Mechanical, morphological and thermal properties of linear low density polyethylene/poly(lactic acid) blends

2018 ◽  
Author(s):  
Engku Zaharah Engku Zawawi ◽  
Dzaraini Kamarun ◽  
Rozana Mohd Dahan ◽  
Nor Haleeda Mohammad Adzhar
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Low Density Polyethylene ◽  
Poly Lactic Acid ◽  
Low Density ◽  
Linear Low Density Polyethylene

Thermal degradation and physical aging of linear low density polyethylene and poly(l-lactic acid) blends

2012 ◽  
Vol 32 (1) ◽  
Author(s):  
Gursewak Singh ◽  
Haripada Bhunia ◽  
Pramod K. Bajpai ◽  
Veena Choudhary
Keyword(s):  
Lactic Acid ◽  
Physical Aging ◽  
Hydrolytic Degradation ◽  
Low Density Polyethylene ◽  
Mechanical And Thermal Properties ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Thermal Index ◽  
Blend Films ◽  
Blown Film

Abstract Melt blending of linear low density polyethylene (LLDPE) and poly(l-lactic acid) (PLLA) was performed in an extrusion mixer with post extrusion blown film attachment with and without a compatibilizer-maleic anhydride grafted low density polyethylene. The blend compositions were optimized for tensile properties as per ASTM D 882-91. Based on this, LLDPE 80 (80 wt% LLDPE and 20 wt% PLLA) and M-g-L 80/4 (80 wt% LLDPE, 20 wt% PLLA and 4 parts compatibilizer/100 parts of resin were found to be an optimum composition. The thermal gravimetric profile and thermal endurance of these blends were characterized as per ASTM E1641-07 and E1877-05. The effect of physical aging on mechanical and thermal properties of these blends was evaluated. The PLLA showed the highest Arrhenius activation energy, relative thermal index and strongest thermal endurance of all samples followed by M-g-L 80/4 and LLDPE 80. The thermo-oxidation coefficient improved with addition of compatibilizer in the blends. With increasing pH, the hydrolytic degradation of the blend films increased, while both the tensile strength and the elongation at the break of the blend films decreased.

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