Miscibility and isothermal crystallization behavior of polyamide 6/poly(vinyl alcohol) blend

2008 ◽  
Vol 46 (13) ◽  
pp. 1360-1368 ◽  
Author(s):  
Li Cui ◽  
Jen-Taut Yeh ◽  
Ke Wang ◽  
Qiang Fu
Keyword(s):  
Isothermal Crystallization ◽  
Vinyl Alcohol ◽  
Crystallization Behavior ◽  
Polyamide 6 ◽  
Poly Vinyl Alcohol

Thermal properties and non-isothermal crystallization behavior of biodegradable poly(p-dioxanone)/poly(vinyl alcohol) blends

2006 ◽  
Vol 55 (4) ◽  
pp. 383-390 ◽  
Author(s):  
Zhi-Xuan Zhou ◽  
Xiu-Li Wang ◽  
Yu-Zhong Wang ◽  
Ke-Ke Yang ◽  
Si-Chong Chen ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Isothermal Crystallization ◽  
Vinyl Alcohol ◽  
Crystallization Behavior ◽  
Poly Vinyl Alcohol ◽  
Biodegradable Poly

The non-isothermal crystallization behavior of polyamide 6 and polyamide 6/HDPE/MAH/L-101 composites

2019 ◽  
Vol 39 (2) ◽  
pp. 124-133 ◽  
Author(s):  
Bingxiao Liu ◽  
Guosheng Hu ◽  
Jingting Zhang ◽  
Zhongqiang Wang
Keyword(s):  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Crystallization Behavior ◽  
Isothermal Condition ◽  
Crystallization Rate ◽  
Polyamide 6 ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Analysis And Design ◽  
Processing Techniques

AbstractStudy of the crystallization kinetics is particularly necessary for the analysis and design of processing operations, especially the non-isothermal crystallization behavior, which is due to the fact that most practical processing techniques are carried out under non-isothermal conditions. The non-isothermal crystallization behaviors of polyamide 6 (PA6) and PA6/high-density polyethylene/maleic anhydride/2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (PA6/HDPE/MAH/L-101) composites were investigated by differential scanning calorimetry (DSC). The crystallization kinetics under non-isothermal condition was analyzed by the Jeziorny and Mo equations, and the activation energy was determined by the Kissinger and Takhor methods. The crystal structure and morphology were analyzed by wide-angle X-ray diffraction (WXRD) and polarized optical microscopy (POM). The results indicate that PA6/HDPE/MAH/L-101 has higher crystallization temperature and crystallization rate, which is explained as due to its heterogeneous nuclei.

scholarly journals Fabrication and characterization of electrospun feather keratin/poly(vinyl alcohol) composite nanofibers

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9854-9861 ◽  
Author(s):  
Ming He ◽  
Buning Zhang ◽  
Yao Dou ◽  
Guoqiang Yin ◽  
Yingde Cui ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Molecular Interactions ◽  
Vinyl Alcohol ◽  
Crystallization Behavior ◽  
Composite Nanofibers ◽  
Electrospinning Process ◽  
Poly Vinyl Alcohol ◽  
Feather Keratin ◽  
Fabrication And Characterization

We have fabricated random and aligned feather keratin (FK)/PVA composite nanofibers through an electrospinning process. The morphology, molecular interactions, crystallization behavior, and tensile properties of the nanofibers were investigated.

Structures and Performances of PA6/PVA Nanofibers Membranes from Electrospinning

2015 ◽  
Vol 1088 ◽  
pp. 52-57 ◽  
Author(s):  
Yan Xu ◽  
Bing Gao ◽  
Bao Qi Zuo
Keyword(s):  
Vinyl Alcohol ◽  
Sound Absorption ◽  
Polyamide 6 ◽  
Poly Vinyl Alcohol ◽  
Absorption Coefficients ◽  
Structure And Property ◽  
Stable Performance ◽  
Ft Ir ◽  
Dsc Analyses ◽  
Tga And Dsc

The effects of different proportions of poly (vinyl alcohol) and polyamide 6 on the structure and property of electrospun PA6/PVA membranes have been studied. According to a certain proportion, PVA and PA6 were dissolved in formic acid. The solution was electrospun at 70 kV. The nanofibers membranes were characterized by SEM, FT-IR, XRD, TGA and DSC analyses. The sound absorption coefficients of each absorber are measured with SW477 impedance tube. PA6/PVA composite mats with good compatibility and relatively stable performance, and enhanced sound absorption and property may have many other important applications.

Poly(Vinyl Alcohol) Fiber Reinforced High Density Poly(Ethylene) Composites: Melting and Crystallization Behavior

2018 ◽  
Vol 773 ◽  
pp. 100-105
Author(s):  
Umi Rofiqah ◽  
Achmad Chafidz ◽  
Lilis Kistriyani ◽  
Mujtahid Kaavessina ◽  
Muhammad Rizal ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Crystallization Behavior ◽  
Crystallinity Index ◽  
Fiber Composites ◽  
High Density ◽  
Peak Temperature ◽  
Poly Vinyl Alcohol ◽  
Scanning Calorimetry ◽  
Poly Ethylene ◽  
Pva Fiber

In the present study, high density poly(ethylene) (HDPE)/poly(vinyl alcohol) (PVA) fiber composites were prepared via melt blending technique using a co-rotating twin screw extruder (TSE). The effect of four different PVA fiber concentrations (i.e. 0, 5, 10, 20 wt%) on the melt and crystallization behavior of the HDPE/PVA fiber composites were investigated. The surface morphology of the composites was analyzed by a scanning electron microscopy (SEM). Whereas, the melt and crystallization behavior of the composites were analyzed by a differential scanning calorimetry (DSC). The SEM analysis on the cryo-fractured surface of the HDPE/PVA fiber composites exhibited that the PVA fibers were well blended/distributed in the HDPE matrix. Additionally, the DSC test results showed that the addition of PVA fiber in the HDPE matrix did not significantly change the melting peak temperature (Tm) of the composites. Furthermore, a slight decrease of the crystallization peak temperature (Tc) can be observed when the PVA fiber was incorporated in the HDPE matrix, which indicated a weak nucleation ability of the PVA fibers in the HDPE crystallization process. The same trend was also observed for the crystallinity index (Xc). The crystallinity index of the composites decreased with increasing PVA fiber loadings.

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