Influence of fiber content on rheological and mechanical properties of pineapple leaf fibers‐polypropylene composites prepared by twin‐screw extrusion

The blend composite materials of bio-ethanol byproduct-Poly(lactic acid) (PLA) were produced by a twin-screw extrusion process. Effects of bio-ethanol byproduct (BEB) contents and different compatibilizers on properties of composite materials were investigated. The research showed that with the increase of contents of bio-ethanol byproduct, the mechanical properties decreased. The mechanical properties of composites were improved by adding the compatibilizers, especially the polypropylene grafted maleic anhydride (PP-MAH). When the PP-MAH content was 2.5%, the mechanical properties of the composite materials were superior to others.

Download Full-text

Cellulolytic Enzyme Lignin Efficiently Blended with Polycaprolactone: Thermal, Mechanical Properties and Morphological Evaluation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1070-1072.100 ◽

2014 ◽

Vol 1070-1072 ◽

pp. 100-106

Author(s):

Wen Zhu Ouyang ◽

Yong Huang

Keyword(s):

Mechanical Properties ◽

Mechanical Test ◽

Cellulolytic Enzyme ◽

Twin Screw Extrusion ◽

Morphological Evaluation ◽

Screw Extrusion ◽

Thermal Mechanical Properties ◽

Twin Screw ◽

The Cost ◽

The Impact

In this study, cellulolytic enzyme lignin (CEL) was blended with polycaprolactone (PCL) by twin-screw extrusion and injection molding. The thermal, mechanical properties and the morphology of the PCL/CEL blends were investigated as a function of CEL content. The results showed that the CEL in the blends acting as nucleus accelerated the crystallization of PCL when CEL was not more than 10 wt%, but retarded PCL to crystallize with more CEL addition. Thermogravimetry analysis (TGA) revealed that the thermal stability of the PCL/CEL blends was almost unaffected by increasing CEL content. Mechanical test showed that, although the elongation at break and the impact strength were decreased, the strength and the modulus of the PCL/CEL blends were significantly higher than those of the neat PCL. Scanning electron microscopy (SEM) observations indicated that the CEL and the PCL were in good miscibility and there was a good adhesion at the interface of the CEL filler and the PCL matrix, suggesting that CEL could be potential filler used in PCL-based materials to reduce the cost of the friendly material, whereas increased its strength and modulus.

Download Full-text

Increasing soluble dietary fiber content and antioxidant activity of wheat bran through twin-screw extrusion pretreatment

Preparative Biochemistry & Biotechnology ◽

10.1080/10826068.2020.1777424 ◽

2020 ◽

Vol 50 (9) ◽

pp. 954-960

Author(s):

Zichao Wang ◽

Liming Yan ◽

Tao Ning ◽

Xueqing Wang ◽

Ruifang Li ◽

...

Keyword(s):

Antioxidant Activity ◽

Dietary Fiber ◽

Wheat Bran ◽

Fiber Content ◽

Twin Screw Extrusion ◽

Soluble Dietary Fiber ◽

Screw Extrusion ◽

Twin Screw

Download Full-text

Mechanical Properties of Poly(ether ether ketone) Composites Reinforced by Carbon Nano-Platelet Chains and Nanoalumina

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705711403638 ◽

2011 ◽

Vol 24 (6) ◽

pp. 755-766 ◽

Cited By ~ 3

Author(s):

S. Joseph ◽

V.A. Bambole ◽

P.A. Mahanwar

Keyword(s):

Mechanical Properties ◽

Filler Content ◽

Dielectric Strength ◽

Filler Loading ◽

Twin Screw Extrusion ◽

Ether Ether Ketone ◽

Screw Extrusion ◽

Poly Ether Ether Ketone ◽

Twin Screw ◽

Thermal Stability Of

Carbon nanoplatelet and nanoalumina reinforced PEEK nanocomposites were fabricated by twin-screw extrusion followed by injection molding. The effect of the filler loading on mechanical properties, morphology, dielectric strength, and thermal stability of the composites has been analyzed. The mechanical properties were found to increase with nanoplatelet content up to 1% loading (optimum filler content) and after that, due to agglomeration of filler, slight decrease in properties were observed. For alumina-filled systems mechanical properties increased with increasing filler content due to the well-dispersed fillers in the composites. The modulus and toughness of alumina-filled composites were higher than platelet-filled composites.

Download Full-text

Multi-Micro/Nanolayer Films Based on Polyolefins: New Approaches from Eco-Design to Recycling

Polymers ◽

10.3390/polym13030413 ◽

2021 ◽

Vol 13 (3) ◽

pp. 413

Author(s):

Geraldine Cabrera ◽

Ibtissam Touil ◽

Emna Masghouni ◽

Abderrahim Maazouz ◽

Khalid Lamnawar

Keyword(s):

Mechanical Properties ◽

Multilayer Films ◽

Twin Screw Extrusion ◽

Mechanical Recycling ◽

Structure And Property ◽

Screw Extrusion ◽

Twin Screw ◽

Promising Solution ◽

Recycling Systems ◽

Property Control

This paper describes a future-oriented approach for the valorization of polyethylene-based multilayer films. The method involves going from eco-design to mechanical recycling of multilayer films via forced assembly coextrusion. The originality of this study consists in limiting the number of constituents, reducing/controlling the thickness of the layers and avoiding the use of tie layers. The ultimate goal is to improve the manufacturing of new products from recycled multilayer materials by simplifying their recyclability. Within this framework, new structures were developed with two polymer systems: polyethylene/polypropylene and polyethylene/polystyrene, with nominal micro- and nanometric thicknesses. Hitherto, the effect of the multi-micro/nanolayer architecture as well as initial morphological and mechanical properties was evaluated. Several recycling processes were investigated, including steps such as: (i) grinding; (ii) monolayer cast film extrusion; or (iii) injection molding with or without an intermediate blending step by twin-screw extrusion. Subsequently, the induced morphological and mechanical properties were investigated depending on the recycling systems and the relationships between the chosen recycling processes or strategies, and structure and property control of the recycled systems was established accordingly. Based on the results obtained, a proof of concept was demonstrated with the eco-design of multi-micro/nanolayer films as a very promising solution for the industrial issues that arise with the valorization of recycled materials.

Download Full-text

The Structure and Mechanical Properties of Cellulose Nanocomposites Prepared by Twin Screw Extrusion

ACS Symposium Series - Cellulose Nanocomposites ◽

10.1021/bk-2006-0938.ch009 ◽

2006 ◽

pp. 114-131 ◽

Cited By ~ 25

Author(s):

Aji P. Mathew ◽

Ayan Chakraborty ◽

Kristiina Oksman ◽

Mohini Sain

Keyword(s):

Mechanical Properties ◽

Twin Screw Extrusion ◽

Screw Extrusion ◽

Twin Screw ◽

Cellulose Nanocomposites

Download Full-text

Research on Processing Technology Product Design and the Application of Nano-Wood-Plastic Composite Materials

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.18881 ◽

2020 ◽

Vol 20 (12) ◽

pp. 7787-7792

Author(s):

Xin Fang ◽

Jinjin Rong ◽

Yilin Deng ◽

Moon-Hwan Jee

Keyword(s):

Mechanical Properties ◽

Wood Plastic Composite ◽

Twin Screw Extrusion ◽

Cross Sectional ◽

Plastic Composite ◽

Screw Extrusion ◽

Different Types ◽

The Matrix ◽

Twin Screw ◽

Treatment Agent

This study focused on the design of wood-plastic composite (WPC) products. In this study, recycled high-density polyethylene plastic was used as the matrix, wood powder was used as the filler, different types of nanofillers and self-synthesized nanofiller treatment agents were added, and the twin-screw extrusion granulation method was used to prepare nano-WPC materials. The effects of different types of nanofillers on the mechanical properties of nano-WPC materials were investigated, and the cross-sectional structures of the materials were analyzed by scanning electron microscopy. The results showed that nanofiller treatment agents improved the interface compatibility of the materials. When the treatment agent content reached 2.5% and the nano-montmorillonite content reached 10%, the mechanical properties of the material reach their maximum values.

Download Full-text