reactive blend
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Author(s):  
Piyawanee Jariyasakoolroj ◽  
Raksit Supthanyakul ◽  
Apirat Laobuthee ◽  
Amornrat Lertworasirikul ◽  
Rangrong Yoksan ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8594-8605
Author(s):  
Arvind Gupta ◽  
Manjusri Misra ◽  
Amar K. Mohanty

This work studies a novel sustainable polymeric material made from a reactive blend of two agri-food waste plastics, with the new material showing strong promise for value-added industrial uses.


Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1925 ◽  
Author(s):  
Rattikarn Khankrua ◽  
Tanyawan Pongpanit ◽  
Ponchai Paneetjit ◽  
Rungnapha Boonmark ◽  
Manus Seadan ◽  
...  

Heat-shrinkable films have widely been used for various applications such as shrinkable labels and cap seals. These plastics have generally a short life. The biodegradable polymers can thus be an ideal candidate for such applications. This work aimed to study the stretching and shrinking ratio of poly(lactic acid)/ethylene vinyl acetate through reactive blends system for heat-shrinkable films application. The reactive agents, Joncryl® and Perkadox were used as in situ compatibilizers. PLA/EVA with 100/0, 97/3, 95/5, 93/7, and 90/10 ratios were prepared in the twin screw extruder. Neat PLA and PLA/EVA films were fabricated by blown film extrusion. The results revealed that the elongation at break of PLA in the TD direction was improved when adding EVA. PLA and EVA film with 0.1 phr of Perkadox was found to be sufficient as evident by FESEM micrograph and DMTA results. The films were stretched and shrunk at a temperature of 70 °C. The percentage of shrinkage of the stretched PLA/EVA reactive blend films, two and three times were, 100%, approximately. On the other hand, the four-times stretched films shrunk less than 100% because of the excessive stretching, which resulted in film breakage and defect.


Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1363 ◽  
Author(s):  
Berit Brüster ◽  
Yann-Olivier Adjoua ◽  
Reiner Dieden ◽  
Patrick Grysan ◽  
Carlos Eloy Federico ◽  
...  

Polylactide (PLA) was blended by conventional and reactive extrusion with limonene (LM) or myrcene (My) as bio-based plasticizers. As-processed blends were carefully analyzed by a multiscale and multidisciplinary approach to tentatively determine their chemical structure, microstructure, thermal properties, tensile and impact behaviors, and hydrothermal stability. The main results indicated that LM and My were efficient plasticizers for PLA, since compared to neat PLA, the glass transition temperature was reduced, the ultimate tensile strain was increased, and the impact strength was increased, independently of the type of extrusion. The addition of a free radical initiator during the extrusion of PLA/LM was beneficial for the mechanical properties. Indeed, the probable formation of local branched/crosslinked regions in the PLA matrix enhanced the matrix crystallinity, the tensile yield stress, and the tensile ultimate stress compared to the non-reactive blend PLA/LM, while the other properties were retained. For PLA/My blends, reactive extrusion was detrimental for the mechanical properties since My polymerization was accelerated resulting in a drop of the tensile ultimate strain and impact strength, and an increase of the glass transition temperature. Indeed, large inclusions of polymerized My were formed, decreasing the available content of My for the plasticization and enhancing cavitation from inclusion-matrix debonding.


2019 ◽  
Vol 164 ◽  
pp. 187-197 ◽  
Author(s):  
Anibal Bher ◽  
Ilke Uysal Unalan ◽  
Rafael Auras ◽  
Maria Rubino ◽  
Carlos E. Schvezov

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55593-55598 ◽  
Author(s):  
Tsai-Wei Chuo ◽  
Jui-Ming Yeh ◽  
Ying-Ling Liu

The first example of electrically-induced self-healing anticorrosion materials shows synergistic effects on anticorrosion efficiency and self-healing property.


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