Morphology and Crystallization Behavior of Toughened Poly(trimethylene terephthalate) Blends with Maleated Styrene-Butylene-Co-Ethylene-Styrene Copolymers

2011 ◽  
Vol 415-417 ◽  
pp. 325-328 ◽  
Author(s):  
Kun Yan Wang ◽  
Shi Yang Zhou ◽  
Xu Qing Xu ◽  
Feng Cao
Keyword(s):  
Melting Point ◽  
Crystallization Behavior ◽  
Dispersed Phase ◽  
Melt Blending ◽  
Styrene Copolymer ◽  
Styrene Copolymers ◽  
Differential Scanning Colorimetry ◽  
Trimethylene Terephthalate ◽  
Partical Size ◽  
Constant Addition

The blends of poly(trimethylene terephthalate) (PTT) with maleated styrene-butylene-co-ethylene-styrene copolymer (SEBS-g-MA) were prepared by melt blending. Their morphologies and crystallization behavior were investigated. Morphology observation shows the well-dispersed phase of SEBS-g-MA in PTT matrix and the partical size of SEBS-g-MA increased as the content of SEBS-g-MA increasing. Differential scanning colorimetry(DSC) experiments showed that the melting point of pure PTT and their blends was almost constant. Addition of 5-30wt% SEBS-g-MA in blends increased crystallization points of PTT phase and the crystallinity of the blends were higher than that of PTT.

Rheological Properties and Crystallization Behavior of Poly(trimethylene Terephthalate) Blends with PBPCS

2013 ◽  
Vol 652-654 ◽  
pp. 377-380
Author(s):  
Kun Yan Wang ◽  
Feng Cao
Keyword(s):  
Liquid Crystal ◽  
Melting Point ◽  
Crystallization Behavior ◽  
Low Frequency ◽  
Complex Viscosity ◽  
Crystallization Properties ◽  
Crystal Polymer ◽  
Differential Scanning Colorimetry ◽  
Trimethylene Terephthalate ◽  
Small Content

Several blends of poly (trimethylene terephthalate) and the classical mesogen jacketed liquid crystal polymer poly{2,5-bis[(4-butoxyphenyl)oxycarbonyl]-styrenes}(PBPCS) have been prepared with different compositions. The rheological and crystallization properties of the prepared blends have been investigated. The effect of the PBPCS amount on the complex viscosity was quit prominent at low frequency, and decreased with increasing frequency. Differential scanning colorimetry(DSC) experiments showed that adding small content of PBPCS (0.5wt%), the melting point of was slightly higher than that of pure PTT and The crystallinity of PTT incresased.

Morphology and Crystallization Behavior of Toughened Poly(Trimethylene Terephthalate) Blends with Acrylonitrile-Butadiene-Styrene

2013 ◽  
Vol 791-793 ◽  
pp. 240-243
Author(s):  
Kun Yan Wang
Keyword(s):  
Crystallization Behavior ◽  
Acrylonitrile Butadiene Styrene ◽  
Screw Extruder ◽  
Differential Scanning Colorimetry ◽  
The Matrix ◽  
Twin Screw ◽  
Trimethylene Terephthalate ◽  
Partical Size ◽  
Scanning Electron ◽  
Butadiene Styrene

Poly (trimethylene terephthalate) (PTT)/acrylonitrile-butadiene-styrene (ABS) blends have been prepared in composition with various ratios using the twin screw extruder approach. Their morphologies and crystallization behavior were investigated. Typical sea-island morphologies were observed by scanning electron microscopy. The partical size of ABS increased as the content of ABS increasing. Differential scanning colorimetry (DSC) experiments showed that the melting point of pure PTT and their blends was almost constant. The presence of the ABS increased the crystallinity of the matrix in PTT/ABS blends with ABS content less than 30wt%.

Crystallization Behavior and Crystal Morphology of PP/POEg Blends

2014 ◽  
Vol 941-944 ◽  
pp. 1253-1256
Author(s):  
Kun Yan Wang
Keyword(s):  
Crystallization Behavior ◽  
Crystal Morphology ◽  
Optical Microscope ◽  
Melt Blending ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Blending Method ◽  
Differential Scanning Colorimetry ◽  
Poly Ethylene ◽  
Spherulitic Structure

Polypropylene (PP)/Maleic anhydride grafted poly (ethylene-octene) (POEg) were prepared by melt blending method. The crystallization behavior and crystal morphology were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), and polarzing optical microscope (POM). Differential scanning colorimetry (DSC) experiments showed that the melting point and crystallization point decreased when POEg added to the blend. XRD results show that the POEg not change the crystal structure in the blends but only decrease the intensity of the diffraction peak. The spherulitic structure could also observed when added POEg to the matix of PP, but the shape of the spherulites distorted.

Effects of Reactive Compatibilizer on the Rheological Properties and Crystallization Behavior of Poly(Trimethylene Terephthalate) Blends with Core-Shell Structured Modifiers

2012 ◽  
Vol 549 ◽  
pp. 366-369
Author(s):  
Kun Yan Wang ◽  
Ying Ye ◽  
Xiao Qing Zhu ◽  
Feng Cao
Keyword(s):  
Crystallization Behavior ◽  
Low Frequency ◽  
Complex Viscosity ◽  
Diglycidyl Ether ◽  
Melt Processing ◽  
Frequency Range ◽  
Crystallization Properties ◽  
Differential Scanning Colorimetry ◽  
Trimethylene Terephthalate ◽  
Reactive Compatibilizer

Poly (trimethylene terephthalate)/polybutadiene grafted polymetyl methacrylate (PB-g-PMMA, MB) blends were prepared by melt processing with and without diglycidyl ether of bisphenol-A (DGEBA) epoxy resin as a reactive compatibilizer. The rheological and crystallization properties of the prepared blends have been investigated. The complex viscosity of PTT/MB blend increased in the presence of DGEBA at low frequency range. Differential scanning colorimetry(DSC) experiments showed that the melting point of pure PTT and their blends was almost constant. Crystallization points decreased when 1wt% DGEBA added to the blend.

Thermal Stability and Crystallization Behavior of PP/Organoclay Phase Change Composites

2013 ◽  
Vol 785-786 ◽  
pp. 123-126
Author(s):  
Ying Ye ◽  
Kun Yan Wang ◽  
Ge Chang ◽  
Qian Ying Jiang
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Crystallization Behavior ◽  
Melt Blending ◽  
X Ray Diffraction ◽  
Nucleation Agent ◽  
Scanning Calorimetry ◽  
Blending Method ◽  
Phase Change Composites ◽  
Change Material

Polypropylene/organoclay modified by dodecanol phase change material were prepared by melt blending method. The thermal stability and crystallization behavior was studied by thermogravimetry (TG), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). TG results indicated the window of processing of PP could be improved by adding small amount organoclay modified by dodecanol to the blend. DSC showed the organoclay modified by dodecanol affected the crystallization behavior of PP as heterogeneous nucleation agent. XRD results show that the organoclay modified by dodecanol does not change the crystal structure in the blends but only decrease the intensity of the diffraction peak.

Isothermal Crystallization Behavior of Poly (L-lactic Acid)/ Surface-Grafted Silica Nanocomposites

2012 ◽  
Vol 268-270 ◽  
pp. 37-40 ◽  
Author(s):  
Yan Hua Cai
Keyword(s):  
Lactic Acid ◽  
Isothermal Crystallization ◽  
Crystallization Behavior ◽  
Nucleating Agent ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Silica Nanocomposites ◽  
Induction Periods ◽  
Sio2 Nanocomposites ◽  
Different Content

The Poly(L-lactic acid)(PLLA)/surface-grafting silica(g-SiO2) nanocomposites were prepared by melt blending. The isothermal crystallization behavior of PLLA/g-SiO2 nanocomposites with different content of g-SiO2 was investigated by optical depolarizer. In isothermal crystallization from melt, the induction periods and half times for overall PLLA crystallization (95°C Tc 120°C) were affected by the crystallization temperature and the content of g-SiO2 in nanocomposites. The results showed that g-SiO2 as a kind of heterogeneous nucleating agent can reduce induction periods and half times for overall PLLA crystallization. The thermal properties of PLLA/g-SiO2 samples were also investigated by differential scanning calorimetry (DSC), The results showed that the crystalline degree of PLLA was improved as the presence of g-SiO2.

Crystalline Morphology and Crystallization Behavior of Poly(Trimethylene Terephthalate)/Functionalized Graphene Oxide Nanocomposites Prepared by Melt Compounding

2019 ◽  
Vol 814 ◽  
pp. 96-101
Author(s):  
Kun Yan Wang
Keyword(s):  
Graphene Oxide ◽  
Crystallization Behavior ◽  
Optical Microscope ◽  
Degree Of Crystallinity ◽  
Functionalized Graphene ◽  
Crystalline Morphology ◽  
Scanning Calorimetry ◽  
Functionalized Graphene Oxide ◽  
Melt Compounding ◽  
Trimethylene Terephthalate

Poly (trimethylene terephthalate) (PTT)/functionalized graphene oxide (fGO) nanocomposites were prepared by melt compounding. The crystalline morphology and crystallization behavior of PTT/fGO with different amounts of fGO were investigated by differential scanning calorimetry (DSC) and polarizing optical microscope (POM). The results show that the crystallization peak shifts to higher temperature after adding fGO, indicating that fGO have a nucleating effect on PTT. The crystallization temperature of nanocomposites increases with increasing content of fGO. The XRD pattern of PTT/fGO nanocomposites almost no change that indicated the degree of crystallinity of the PTT matrix remained unaffected by the addition of fGO. The nanocomposite revealed integrated Maltese crossed spherulitic morphologies. When adding 1% fGO to the PTT, big-sized PTT spherulites occurred and small-sized PTT spherulites were formed around the big-sized PTT spherulites which indicated that the mechanism of nucleation is changed.

Crystallization behavior of spray-dried and freeze-dried graphene oxide/poly(trimethylene terephthalate) composites

2014 ◽  
Vol 131 (11) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chengxin Guo ◽  
Liangliang Ji ◽  
Yaowen Li ◽  
Xiaoming Yang ◽  
Yingfeng Tu
Keyword(s):  
Graphene Oxide ◽  
Crystallization Behavior ◽  
Freeze Dried ◽  
Trimethylene Terephthalate ◽  
Spray Dried

scholarly journals Preparation of Ferrotitanium Using Ilmenite with Different Reduction Degrees

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 962 ◽  
Author(s):  
Zixian Gao ◽  
Gongjin Cheng ◽  
He Yang ◽  
Xiangxin Xue ◽  
Jongchol Ri
Keyword(s):  
Melting Point ◽  
Aluminum Content ◽  
Synthesis Method ◽  
Al2o3 Content ◽  
Reduction Degree ◽  
High Melting Point ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Al Powder ◽  
Constant Addition

The effect of ilmenite with different reduction degrees on the production of ferrotitanium, using a self-propagation high-temperature synthesis method with aluminum as the reducing agent, was investigated. Increasing the degree of reduction not only contributed to lower consumption of aluminum, but also lowered the oxygen content and improved the grades of titanium and iron in the ferrotitanium. The aluminum content of the ferrotitanium increased with an increase in the extent of reduction of ilmenite, so the Al2O3 content formed in the slag decreased with the constant addition of CaO and CaF2 to the Al powder. This decreased relatively the content of high-melting-point CaAl12O19 and increased the contents of low-melting-point CaAl2O4 and CaF2 in the slag, thereby promoting the separation of ferrotitanium and slag. Improving the reduction degree of ilmenite is beneficial to the preparation of ferrotitanium.

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