نتایج جستجو برای: spherulite

تعداد نتایج: 167  

Journal: :Bulletin of the Chemical Society of Japan 1971

Journal: :Journal of Applied Polymer Science 1960

Journal: :IEEJ Transactions on Fundamentals and Materials 1992

2012
Nicolas Cheval Nabil Gindy Clifford Flowkes Amir Fahmi

A simple concept is proposed to metallise polyamide 66 (PA66) spherulite structures with in situ synthesised gold nanoparticles (Au NPs) using a wet chemical method. This cost-effective approach, applied to produce a PA66/Au NP hybrid material, offers the advantages of controlling the nanoparticle size, the size distribution and the organic-inorganic interactions. These are the key factors that...

2015
Jia-Horng Lin Yi-Jun Pan Chi-Fan Liu Chien-Lin Huang Chien-Teng Hsieh Chih-Kuang Chen Zheng-Ian Lin Ching-Wen Lou

This study proposes melt-blending polypropylene (PP) and high density polyethylene (HDPE) that have a similar melt flow index (MFI) to form PP/HDPE polyblends. The influence of the content of HDPE on the properties and compatibility of polyblends is examined by using a tensile test, flexural test, Izod impact test, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTI...

2012
Sujeet Kumar Gupta

Degradation or polyethylene glycol has been studi ed by UV irradiation. A drastic change in the morphology from spherulite to rhythmic pattern has been observed under polarized light microscope when exposed to UV light. Molecular weight of PEG. Rr value and melting point have been recorded after UV exposure. On UV exposure there has also been a change in UV. IR and powder X-ray diffraction patt...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
Alta Fang Mikko Haataja

The crystallization of organic semiconductor thin films from an amorphous phase often results in a broad range of microstructures and molecular arrangements that in turn critically impact the electronic properties of the film. Here we present a diffuse-interface model of thin film crystallization that accounts for out-of-plane tilting of the kinetically favored crystalline orientation as well a...

2005
Jamie K. Hobbs Cvetelin Vasilev Andrew D.L. Humphris

Video rate atomic force microscopy (VideoAFM), with a frame rate of 14 frames/s and a tip velocity of up to 15 cms, is used to image polyethylene oxide films during crystal growth. The capabilities of VideoAFM when applied to semicrystalline polymer surfaces are explored. Image quality comparable to that found with conventional contact AFM is achieved but with a nearly 1000 times improvement in...

2018
Yilei Zheng Yinghong Chen

Differential scanning calorimeter was used to extensively investigate the non-isothermal crystallization of polypropylene (PP)/layered double hydroxides (LDHs) nanocomposites prepared through wet solid-state shear milling. The corresponding crystallization kinetics was further investigated by using Ozawa, modified Avrami and combined Avrami-Ozawa method, respectively. The results showed that th...

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