Influence of Processing Parameters on the Tensile Strength of PA-W/mLLDPE Composite Films Produced by Blown Film Extrusion

Extrusion blown films from Polyamide waste/metallocene linear low-density polyethylene (PAW/mLLDPE) blend based matrix system and calcium carbonates particles were successfully produced and characterized. Also, the effect of the extruder temperature used during twin-screw compounding, the coupling agent loading and PA loading on the mechanical properties of the obtained films were studied. The key aspect of the present study was in investigating the optimal combination of factors by using Design of Experiment (DOE) approach. The responses measured were the tensile strength in the machine direction (MD) and the tensile strength in the transverse direction (TD). Among the selected processing parameters, the coupling agent and the interaction between the coupling agent and the PA loading have the most important influence on the tensile strength.

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Development of PLA/EVA Reactive Blends for Heat-Shrinkable Film

Polymers ◽

10.3390/polym11121925 ◽

2019 ◽

Vol 11 (12) ◽

pp. 1925 ◽

Cited By ~ 1

Author(s):

Rattikarn Khankrua ◽

Tanyawan Pongpanit ◽

Ponchai Paneetjit ◽

Rungnapha Boonmark ◽

Manus Seadan ◽

...

Keyword(s):

Ethylene Vinyl Acetate ◽

Poly Lactic Acid ◽

Elongation At Break ◽

Blend Films ◽

Film Extrusion ◽

Blown Film ◽

Twin Screw ◽

Blown Film Extrusion ◽

Reactive Blend

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.

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Active biodegradable sodium caseinate films manufactured by blown-film extrusion: Effect of thermo-mechanical processing parameters and formulation on lysozyme stability

Industrial Crops and Products ◽

10.1016/j.indcrop.2014.12.047 ◽

2015 ◽

Vol 72 ◽

pp. 142-151 ◽

Cited By ~ 13

Author(s):

Basak Yilin COLAK ◽

Pierre PEYNICHOU ◽

Sophie GALLAND ◽

Nadia OULAHAL ◽

Gilles ASSEZAT ◽

...

Keyword(s):

Sodium Caseinate ◽

Processing Parameters ◽

Mechanical Processing ◽

Film Extrusion ◽

Blown Film ◽

Blown Film Extrusion

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PP-CBW/m-LLDPE/micro-CaCO3 composite films manufactured from bumper waste by blown film extrusion

MATEC Web of Conferences ◽

10.1051/matecconf/201928103001 ◽

2019 ◽

Vol 281 ◽

pp. 03001 ◽

Cited By ~ 1

Author(s):

Nancy Zgheib ◽

Sylvain Seif ◽

Nemr El Hajj

Keyword(s):

Mechanical Properties ◽

Composite Films ◽

Screw Extruder ◽

Scanning Calorimetry ◽

Single Screw Extruder ◽

Blown Film ◽

Twin Screw ◽

Mulch Films ◽

Blown Film Extrusion ◽

The Impact

The synthesis of polypropylene-based car bumper waste (PP-CBW)/metallocene linear low-density polyethylene (m-LLDPE)/micro-CaCO3 composite films for agriculture mulch films applications has been thoroughly investigated during this study. The chemical composition of these wastes was determined by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Three blends of various compositions were prepared using a twin-screw extruder, the pellets were then blown into films using a single screw extruder. The mechanical properties of the films were then studied and compared with the EN 13655, 2002 standards for agriculture mulch films applications. The results indicated that the use of an anhydride grafted polypropylene (MAH-g-PP) as compatibilizer improves the adherence at the interface between the polar acrylic paints present in the car bumper waste and the polymer matrix. Also, the presence of stearic acid surface treated micro-CaCO3 improves considerably the mechanical properties of the composite when the amount of PP-CBW is less than 13 wt%. Using higher amount of PP-CBW improves the tear resistance properties in TD and MD but fails to increase the impact strength and the tensile properties in MD and TD.

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Blown Film Extrusion

10.3139/9781569906972 ◽

2018 ◽

Author(s):

Kirk Cantor

Keyword(s):

Film Extrusion ◽

Blown Film ◽

Blown Film Extrusion

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Effect of Microcrystalline Cellulose from Banana Stem Fiber on Mechanical Properties and Crystallinity of PLA Composite Films

Materials Science Forum ◽

10.4028/www.scientific.net/msf.695.170 ◽

2011 ◽

Vol 695 ◽

pp. 170-173 ◽

Cited By ~ 4

Author(s):

Voravadee Suchaiya ◽

Duangdao Aht-Ong

Keyword(s):

Tensile Strength ◽

Young’S Modulus ◽

Microcrystalline Cellulose ◽

Young's Modulus ◽

Agricultural Waste ◽

Composite Films ◽

Sem Image ◽

Biocomposite Films ◽

Twin Screw ◽

Banana Stem

This work focused on the preparation of the biocomposite films of polylactic acid (PLA) reinforced with microcrystalline cellulose (MCC) prepared from agricultural waste, banana stem fiber, and commercial microcrystalline cellulose, Avicel PH 101. Banana stem microcrystalline cellulose (BS MCC) was prepared by three steps, delignification, bleaching, and acid hydrolysis. PLA and two types of MCC were processed using twin screw extruder and fabricated into film by a compression molding. The mechanical and crystalline behaviors of the biocomopsite films were investigated as a function of type and amount of MCC. The tensile strength and Young’s modulus of PLA composites were increased when concentration of MCC increased. Particularly, banana stem (BS MCC) can enhance tensile strength and Young’s modulus of PLA composites than the commercial MCC (Avicel PH 101) because BS MCC had better dispersion in PLA matrix than Avicel PH 101. This result was confirmed by SEM image of fractured surface of PLA composites. In addition, XRD patterns of BS MCC/PLA composites exhibited higher crystalline peak than that of Avicel PH 101/PLA composites

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Biodegradable Polymer Compounds Reinforced with Banana Fiber for the Production of Protective Bags for Banana Fruits in the Context of Circular Economy

Agronomy ◽

10.3390/agronomy11020242 ◽

2021 ◽

Vol 11 (2) ◽

pp. 242

Author(s):

Pablo Bordón ◽

Rubén Paz ◽

Carolina Peñalva ◽

Gisela Vega ◽

Mario Monzón ◽

...

Keyword(s):

Circular Economy ◽

Environmental Problem ◽

Ecotoxicity Test ◽

Banana Fiber ◽

Film Extrusion ◽

Blown Film ◽

Blown Film Extrusion ◽

Environmentally Friendly Process ◽

Test Requirements ◽

Better Than

Bags used to protect and accelerate the ripening of bananas are a clear example of the environmental problem of packaging waste. Small pieces of these non-biodegradable bags are frequently disposed on the soil by accident (environmental conditions and poor handling during the harvest) and remain there for years. This work focuses on the development of protective biodegradable bags reinforced with banana fiber, obtained from waste of the banana plants, thus promoting a circular economy and a more environmentally friendly process. To achieve this, different bio-based composites were tested (processability) by compounding extrusion (biopolymer and banana fiber with different process steps) and blown film extrusion. The bags produced were tested in field and sequentially improved in three generations of biofilms. The results showed that the maximum processable fiber content was 5 wt %. Additionally, the micronizing of the compounds was crucial to simplify the blown film extrusion and improve the smoothness of the bags (scratches avoidance on the banana surface). The final bags (Mater-Bi biopolymer, 5% combed and sieved banana fiber, and 2.5 wt % TiO2 for ultraviolet light filtration), performed better than the conventional ones (faster maturing, i.e., earlier harvest, and easier handling) and fulfilled the biodegradability, composting and ecotoxicity test requirements.

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