The preparation of modified polyamide clay nanocomposite/recycled maleic anhydride polyamide 6 and blending with low density polyethylene for film blowing application

2021 ◽  
pp. 096739112110150
Author(s):  
Wei-Hua Yao
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Reactive Extrusion ◽  
Polyamide 6 ◽  
Processing Temperature ◽  
Film Blowing ◽  
Test Pieces ◽  
Characteristic Absorption Peak ◽  
Terminal Amino ◽  
Maleic Anhydride Copolymer

Generally, polyamide cannot be used as film blowing material because of its unsuitable properties. In this study, polyamide 6 clay nanocomposite (cPA) and styrene maleic anhydride copolymer (SMA) were mixed in various ratios for the preparation of modified polyamide 6 clay nanocomposite SxcPAy resins by reactive extrusion. The S1cPA14 resin was blended with recycled maleic anhydride polyamide (rPA) to form the (S1cPA14)x rPAy resins. Finally, they were mixed with LDPE in 1:9 ratio to afford (SxcPAy)1LDPE9 and ((S1cPA14)x rPAy)1LDPE9 resins, respectively, followed by film blowing and the analyses of the physicochemical properties of resins. The FTIR spectrum illustrated that the C=O symmetric and asymmetric absorption fingerprint peaks in the anhydride (-OC-O-CO-) group of SMA disappeared and the new characteristic absorption peak of-CO-N-CO- of imides was observed. The anhydride functional group of SMA underwent reactive extrusion with the terminal amino group of cPA to generate the imides structure. The thermal properties showed that the glass transition temperature and crystallinity of SxcPAy and (S1cPA14)x rPAy resins increased with increasing SMA and S1cPA14 contents. The Tg (85.4.0°C) of (S1cPA14)12 rPA1 resin were enhanced significantly, with 30°C higher than cPA. In terms of tensile mechanical properties, S1cPA14 test pieces demonstrated the highest Young’s modulus and tensile strength. After mixing with LDPE, the tensile mechanical properties of (SxcPAy)1LDPE9 and ((S1cPA14)x rPAy)1LDPE9 resins and films were both higher than that of LDPE. ((S1cPA14)12 rPA1)1LDPE9 film shown the best tensile properties and barrier performance compared with other films due to the optimal rPA content could assisted SMA as a better compatibilizer to improve the dispersion and compatibility of cPA in HDPE. It was worth noting that (SxcPAy)1LDPE9 and ((S1cPA14)x rPAy)1LDPE9 resins were formed by film blowing at the processing temperature of 140°C followed by successful preparation of the film.

Mechanical Properties of High Loading Luffa acutangula Fiber with Cloisite 15A and Polypropylene

2015 ◽  
Vol 1134 ◽  
pp. 178-184
Author(s):  
Siti Nurai'syah Umar Shaifudin ◽  
Dzaraini Kamarun ◽  
Nur Hikamah Seth ◽  
Engku Zaharah Engku Zawawi
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Coupling Agent ◽  
High Loading ◽  
Compression Moulding ◽  
Test Pieces ◽  
Reinforcing Fillers ◽  
Total Composition ◽  
Luffa Acutangula ◽  
Cloisite 15A

Matured luffa fibers can be used as reinforcing fillers for polymers to produce industrial products. Frequently, these fibers are incorporated in thermoplastics and thermosets binders at low loadings (1 – 40) wt % of total composition. In this project, high loadings of luffa fiber (50 to 70 wt %) were incorporated with polypropylene (PP), coupling agent maleic anhydride grafted polypropylene (MAPP) and Cloisite 15A using extrusion for compounding. (C15A) at 5 wt % was added for reinforcement and to increase density of compounded materials for ease of processing during mixing. The compounded material was pelletized and the test pieces were prepared using compression moulding and shaped according to the standard. The effects of fiber loadings on the mechanical properties of the composites were determined.

Development of PA6/HDPE Nanocomposite Blends

2012 ◽  
Vol 729 ◽  
pp. 216-221 ◽  
Author(s):  
Hajnalka Hargitai ◽  
Tamás Ibriksz ◽  
János Stifter ◽  
Endre Andersen
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Layered Structure ◽  
Coupling Agent ◽  
High Density Polyethylene ◽  
Polyamide 6 ◽  
High Density ◽  
Polyethylene Blends ◽  
Chemical Coupling ◽  
Melting Properties

In our experiments polyamide 6/high density polyethylene blends (25/75 wt%) were produced and maleic anhydride grafted polyethylene was used as chemical coupling agent. To get finer microstructure and enhance the mechanical properties the blends were compounded by different nanostructured reinforcements. Two kinds of nanosilicate, the layered structure montmorillonite and the needle like sepiolite were applied in different concentrations and their effect on the mechanical and melting properties were examined.

Impregnation Behavior of Polyamide 6 in Carbon Fibers and the Properties of their Composites

2017 ◽  
Vol 898 ◽  
pp. 2134-2142
Author(s):  
Yu Fei Hu ◽  
Jian Zhang ◽  
Biao Wang ◽  
Xue Na Zhang
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Simulated Data ◽  
Polyamide 6 ◽  
Processing Parameters ◽  
Void Content ◽  
Processing Temperature ◽  
Resin Flow ◽  
Minimum Level ◽  
Properties Of Composites

Unidirectional carbon fiber (CF) / Polyamide 6 (PA6) composites were prepared by stacking fabrics method. Due to the effect of the textile structure and rough surface of PA6 fabrics, slipping of carbon fibers (CFs) during the stacking process was prevented and uniformity of impregnation was improved. Meanwhile, the usage of PA6 fabrics resulted in the minimum level of void content of composites, which improved the mechanical properties of composites. Additionally, the void content of materials was associated with the mechanical properties of composites. The flexural strength of composite reached 819.58 MPa when its void content was 3.49%. Moreover, a model based on Darcy’s law was developed to simulate the impregnation behavior of PA6 in CFs which was made by stacking fabrics method. The resin flow was observed by using optical microscopy. The evolution of void content in composites was related to the processing parameters (holding time, processing temperature and processing pressure).The comparison between the experimental and simulated data showed that the model was reliable to describe the impregnation process.

Effect of Tetradecyl Methyl Acrylate-Maleic Anhydride Copolymer on the Mechanical Properties of Glass Mat Reinforced Polypropylene Composites

2005 ◽  
Vol 13 (4) ◽  
pp. 403-413
Author(s):  
Shanhua Zhou ◽  
Zhiyu Xu ◽  
Xin Liu ◽  
Yan Gao ◽  
Qingzhi Dong
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polypropylene Composites ◽  
Monomer Ratio ◽  
Maleic Anhydride Copolymer ◽  
Glass Mat ◽  
The Impact ◽  
Interfacial Modifier

A new interfacial modifier made of tetradecyl methylacrylate-maleic anhydride copolymer (TMA- co-MAH) was prepared and characterized. The effect of reaction time and monomer ratio on the gross conversion and MAH content in the copolymer was studied. When the glass mat was treated with TMA- co-MAH solutions and compounded with PP, the MAH group of the interfacial modifier formed strong interactions with the glass mat and the long side chain of the interfacial modifier entangled firmly with the polypropylene matrix. In comparison with maleated polyolefins, the higher MAH content of the TMA- co-MAH resulted in better interfacial adhesion between the PP and the glass mat resulting in increased flexural strength and modulus, and the ductility of the TMA- co-MAH introduced a ductile interlayer into the interface of the glass mat reinforced polypropylene composites (GMT-PPs) to achieve higher impact strength. Therefore the mechanical properties of composites treated with TMA- co-MAH were all superior to those of GMT-PPs treated with maleic anhydride grafted polypropylene (PP- g-MAH) solutions when they were used at the same level. The effects of anhydride content, concentration of copolymer and compounding time on the mechanical property of GMT-PPs were investigated. With the optimal monomer ratio, MAH:TMA = 7:3, a 3% copolymer solution and a compounding time of 5 min, the impact strength, flexural strength and modulus of GMT-PPs treated with the new interfacial modifier were all improved significantly compared with composites treated with 0.3% PP- g-MAH solution.

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