Preparation and Property Study of PTT/CAB Blend Fibers

2014 ◽  
Vol 496-500 ◽  
pp. 384-387
Author(s):  
Li Yan Wang ◽  
Guang Li ◽  
Li Jun Yang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Cellulose Acetate ◽  
Moisture Absorption ◽  
Melt Blending ◽  
Dye Uptake ◽  
Elongation At Break ◽  
Trimethylene Terephthalate ◽  
Absorption Percentage ◽  
Acetate Butyrate

Poly (trimethylene terephthalate) (PTT) /cellulose acetate butyrate (CAB) blend fibers were prepared through melt blending and spinning in this paper. The mechanical properties, dyeability, and hydroscopicity of PTT/CAB fibers were studied. The results indicated that the tensile strength of PTT / CAB blend fibers reduced slightly and the elongation at break increased with CAB content rising. And the dye uptake and moisture absorption percentage of PTT / CAB blend fibers increased as more CAB was added, i.e., in some degree, CAB added improved PTT fibers dyeability and hydroscopicity.

Study on the Dyeability and Hygroscopicity of Polypropylene/Cellulose Acetate Butyrate Fibers by Melt Blending

2012 ◽  
Vol 476-478 ◽  
pp. 413-416
Author(s):  
Shan Li ◽  
Guang Li ◽  
Li Yan Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Cellulose Acetate ◽  
Cellulose Acetate Butyrate ◽  
Melt Blending ◽  
Elongation At Break ◽  
Acetate Butyrate

Polypropylene/cellulose acetate butyrate(PP/CAB) blend fibers were prepared through melt blending and spinning. The dyeability, hygroscopicity, mechanical properties were investigated. The results showed that additional CAB could improve the dyeability and hygroscopicity of PP fibers. With increasing amount of CAB, the dyeability and hygroscopicity was also increasing. The tensile strength and elongation at break exhibited reduced with increasing content of CAB.

Preparation and characterizations of ternary biodegradable blends composed of polylactide, poly(ε-caprolactone), and wood flour

2012 ◽  
Vol 32 (6-7) ◽  
pp. 435-444 ◽  
Author(s):  
Hsin-Tzu Liao ◽  
Chin-San Wu
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Tensile Strength ◽  
Fourier Transform ◽  
Wood Flour ◽  
High Price ◽  
Infrared Analysis ◽  
Melt Blending ◽  
Ternary Blends ◽  
Elongation At Break

Abstract Melt blending of polylactide (PLA), poly(ε-caprolactone) (PCL), and wood flour (WF) was performed in an effort to overcome the major drawbacks (brittleness and high price) of PLA. In addition, the acrylic acid (AA)-grafted PLA70PCL30 (PLA70PCL30-g-AA) was used as the alternative for the preparation of ternary blends to improve the compatibility and the dispersability of WF within the PLA70PCL30 matrix. As expected, PCL improved the elongation at break and the toughness of PLA but decreased the tensile strength and modulus. Because the hydrophilic WF is dispersed physically in the hydrophobic PLA70PCL30 matrix, as the result of Fourier transform infrared analysis, the mechanical properties of PLA70PCL30 became noticeably worse when it was blended with WF. This problem was successfully conquered by using PLA70PCL30-g-AA to replace PLA70PCL30 due to the formation of an ester carbonyl group between PLA70PCL30-g-AA and WF. Furthermore, the PLA70PCL30-g-AA/WF blend provided a plateau tensile strength at break when the WF content was up to 50 wt%. PLA70PCL30/WF exhibited a tensile strength at break of approximately 3–25 MPa more than PLA70PCL30-g-AA/WF. By using p-cresol and tyrosinase, the enzymatic biodegradable test showed that PLA70PCL30-g-AA is somewhat more biodegradable than PLA70PCL30 because the former has better water absorption. After 16 weeks, the weight loss of the PLA70PCL30/WF (50 wt%) composite was >80%. PLA70PCL30-g-AA/WF exhibited a weight loss of approximately 1–12 wt% more than PLA70PCL30-g-AA/WF. It was also found that the addition of WF to PLA70PCL30 or PLA70PCL30-g-AA decreased the crystallinity of PLA and PCL in PLA70PCL30 or PLA70PCL30-g-AA and then increased their biodegradable property.

Studies on the Mechanical Properties of Foam CB-PVC Composite

2013 ◽  
Vol 681 ◽  
pp. 256-259
Author(s):  
Xiu Qi Liu ◽  
He Qin Xing ◽  
Li Li Zhao ◽  
Dan Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Mechanical Index ◽  
Melt Blending ◽  
Elongation At Break ◽  
Foam Composite ◽  
The Matrix ◽  
System Prototype ◽  
Made In

In our study, a new kind of foam composite was prepared by melt blending with PVC as the matrix and carbon black (CB) as the filler, the standard-spline was made in the dumbbell system prototype. Tensile strength and elongation at break were measured at 25°C。When the CB was added greater than 2.0%, with the increase of CB added, the determination of sample mechanical index began to decline, when the CB content was greater than 9%, tensile strength and elongation at break of the composites remained basically unchanged.

scholarly journals Simultaneous Improvement in the Tensile and Impact Strength of Polypropylene Reinforced by Graphene

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Li Juan
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Fracture Surface ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Morphological Behavior ◽  
Scanning Electron

The nanocomposites of polypropylene (PP)/graphene were prepared by melt blending. The effects of the dosage of graphene on the flow and mechanical properties of the nanocomposites were investigated. The morphologies of fracture surfaces were characterized through scanning electron microscopy (SEM). The graphene simultaneous enhanced tensile and impact properties of nanocomposites. A 3.22% increase in tensile strength, 39.8% increase in elongation at break, and 26.7% increase in impact strength are achieved by addition of only 1 wt.% of graphene loading. The morphological behavior indicates the fracture surface of PP/graphene is more rough than that of pure PP.

Effect of Polyethylene Glycol (PEG) on Molten Plasticized Cellulose Acetate (CA)

2013 ◽  
Vol 830 ◽  
pp. 172-175
Author(s):  
Cheng Zhi Chuai ◽  
Zhi Zhang
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Tensile Strength ◽  
Polyethylene Glycol ◽  
Flexural Strength ◽  
Cellulose Acetate ◽  
Flexural Modulus ◽  
Degree Of Polymerization ◽  
Maximum Elongation ◽  
Elongation At Break

Ethylene glycol (EG) and polyethylene glycol (PEG) were added as plasticizers to improve the processing performance of cellulose acetate (CA). The CA with 30% plasticizers were melted by HAAKE at 200 °C. The effects of EG and PEG (degree of polymerization in 200-800) on rheological properties and mechanical properties of CA were investigated. The results show that the plasticizing time, equilibrium torque and melt viscosity of the plasticizing system increase with the increase of PEG molecular weight, while the processing performance decreased. The tensile strength of the system decrease as the PEG molecular weight increased. The plasticizing system which contents 30% PEG-200(degree of polymerization is 200) shows the maximum elongation at break. The minimum values appeared in both flexural strength and flexural modulus in the CA/PEG-200 system.

Mechanical Properties of Poly(3-hydrobutyrate-co-hydroxyvalerate)/ Biodegradable Hyperbranched Poly(ester amide) Blends

2013 ◽  
Vol 745-746 ◽  
pp. 436-441
Author(s):  
Pei Liu ◽  
Long Chen ◽  
Jun Xu ◽  
Mei Fang Zhu ◽  
Zong Yi Qin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Tensile Elongation ◽  
High Dispersion ◽  
Melt Blending ◽  
Elongation At Break ◽  
Biodegradable Composites ◽  
Hyperbranched Poly ◽  
Blending Method ◽  
Fracture Morphologies

Biodegradable composites were prepared by adding hyperbranched poly (ester amide) (HBPs) into poly (3-hydroxybutyrate-co-3-hydrovalerate) (PHBV) through melt blending method. It was found that the tensile strength and toughness of PHBV were simultaneously enhanced by the addition of HBPs. Compared with neat PHBV, the tensile strength of the composite increased about 23% from 20.96 to 25.87 MPa for the content of 2.5 wt.% HBPs, and more remarkable enhancement in tensile elongation at break can be achieved by about 88% for 5 wt.% HBPs. The influences of HBPs on crystallization, thermal and fracture morphologies of PHBV were further evaluated by using differential scanning calorimeter and scanning electron microscope, respectively. The decrease in the crystallinity of PHBV and high dispersion of the HBPs in PHBV matrix were observed, which should contribute to the improvement on the mechanical properties of PHBV.

Study the Effect of the Addition of HAp from Crocodile Bones on the Mechanical Properties of PLA/HAp Composites

2013 ◽  
Vol 834-836 ◽  
pp. 237-240 ◽  
Author(s):  
Kanyakorn Pawarangkool ◽  
Wirunya Keawwattana
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Thermal Process ◽  
Weight Ratio ◽  
Melt Blending ◽  
Elongation At Break ◽  
X Ray ◽  
Infrared Spectrometer ◽  
Scanning Electron

In this work, hydroxyapatite (HAp) was produced from crocodile bones by thermal process at 900°C. X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FTIR) and Scanning electron microscope (SEM) were used to characterize the obtained HAp. Polylactic acid (PLA)/HAp composites were prepared by melt blending as follows: 95/5, 90/10 and 85/15 (weight ratio). The effect of the amount of HAp on the mechanical properties including tensile strength, modulus, elongation at break and impact strength of PLA/HAp composites was undertaken. It was found that tensile strength and elongation at break of the composites decreased with an increase of HAp content, while modulus and impact strength showed no significant effect.

Properties of Compatibilized SAN/NR Blends

2012 ◽  
Vol 488-489 ◽  
pp. 62-66
Author(s):  
Jareenuch Rojsatean ◽  
Supakij Suttireungwong ◽  
Manus Seadan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Electron Microscope ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Reactive Agents ◽  
Internal Mixer ◽  
Scanning Electron

The blend of poly(styrene-co-acrylonitrile) (SAN) and natural rubber (NR) is immiscible and incompatible which lead to poor mechanical properties. Many methods can be carried out to improve the compatibility. In this work, the potential of various reactive compatibilizers in SAN and NR blend was explored. The morphological and mechanical properties were compared. The melt blending of SAN and NR were prepared in an internal mixer with various types of reactive agent such as styrene-co-maleic anhydride (SMA), maleic anhydride (MA), peroxide and mixed reactive agents. The morphological textures of the blends were investigated by scanning electron microscope. Mechanical properties including tensile strength, impact strength and elongation at break were measured. The results of morphological observations revealed that SAN/NR blend with reactive agent, the mixture of SMA and MA show the smallest and the most uniform dispersed NR particles, where the size of NR particle is about 1 µm. The mechanical properties of the blends revealed impact strength and elongation at break were increased with addition of reactive agents. SAN/NR blend with the mixture of SMA and MA showed the highest elongation at break but it had lower impact strength than the blend with SMA.

Effect of Compatibilizer on Mechanical Properties and Water Absorption Behaviour of Coconut Fiber Filled Polypropylene Composite

2013 ◽  
Vol 795 ◽  
pp. 313-317 ◽  
Author(s):  
M. Sabri ◽  
A. Mukhtar ◽  
K. Shahril ◽  
A. Siti Rohana ◽  
Husseinsyah Salmah
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Absorption ◽  
Filler Loading ◽  
Coconut Fiber ◽  
Polypropylene Composite ◽  
Elongation At Break ◽  
Strong Adhesion ◽  
Mechanical Tensile ◽  
Absorption Percentage

Compatibilizer is used to improve mechanical properties and water absorption behaviour of polypropylene/coconut fiber (PP/CF) composites by promoting strong adhesion between CF filler and PP Matrix. Maleic Anhydride Grafted Polypropylene (MAPP) treated and untreated composites were prepared in formulation of 10 wt%, 20 wt%, 30 wt%, and 40 wt%. The mechanical tensile test indicates that composite with 10 wt% has the optimum value of tensile strength, and the MAPP treated composite shows the tensile strength was increased. The modulus of elasticity was increased while the elongation at break was decreased by increasing of filler loading. Meanwhile, the swelling test discerned that the increase of filler loading increased the water absorption of composites and the presence of MAPP reduced the equilibrium water absorption percentage.

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