Results 1 to 10 of about 415,487 (414)

Effects of Chlorinated Polypropylene on the Conformation of Polypropylene in Polypropylene/Chlorinated Polypropylene/Polyaniline Composites [PDF]

Journal of Spectroscopy, 2015
We investigated the changes in the conformation and crystalline structure of polypropylene (PP) using a combination of Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray diffraction (WAXD), and differential scanning calorimetry (DSC) based ...
Jianjun Chen, Yueyue Jia, Zhiye Zhang, Xinlong Wang, Lin Yang   +4 more
doaj   +3 more sources

The nonlinear time-dependent response of isotactic polypropylene [PDF]

, 2002
Tensile creep tests, tensile relaxation tests and a tensile test with a constant rate of strain are performed on injection-molded isotactic polypropylene at room temperature in the vicinity of the yield point. A constitutive model is derived for the time-dependent behavior of semi-crystalline polymers.
Aboulfaraj M., Aleksey D. Drozdov, Ariyama T., Ariyama T., Bergström J. S., Boyce M. C., Coulon G., Drozdov A. D., Drozdov A. D., Duan Y., Dutta N. K., Eyring H., Fayolle B., G’Sell C., Haward R. N., Iijima M., Jesper deC. Christiansen, Kalay G., Krempl E., Losi G. U., Lustig S. R., Maiti P., Meyer R. W., Nitta K.-H., Nitta K.-H., Read B. E., Seguela R., Smart J., Staniek E., Sweeney J., Sweeney J., Sweeney J., Tomlins P. E., Verma R., Ward I. M., Wineman A. S., Wortmann F.-J., Zhang X. C.   +37 more
arxiv   +4 more sources

The nonlinear viscoelastic behavior of polypropylene [PDF]

arXiv, 2002
A series of tensile relaxation tests is performed on isotactic polypropylene in the sub-yield and post-yield regions at room temperature. Constitutive equations are derived for the time-dependent response of a semicrystalline polymer at isothermal loading with small strains.
Christiansen, J. deC., Drozdov, A. D.
arxiv   +5 more sources

Determination of Small-Amount Polypropylene in Imported Recycled Polyethylene/Polypropylene Blends by Fourier Transform Infrared Spectroscopy [PDF]

E3S Web of Conferences, 2021
In the domestic production of recycled plastics, it is difficult to separate olefin polymers such as polyethylene and polypropylene. Therefore, the prerequisite for identifying the cargo-solid waste properties of recycled plastics is to determine the ...
Dai Shujun, Luo Chuan, Zhang Chao, Wang Hao, Zhang Yin, Yuan Lifeng   +5 more
doaj   +1 more source

Mechanical Property of Polypropylene Gels Associated with That of Molten Polypropylenes [PDF]

Gels, 2021
This study aims to understand the fundamental mechanical relationship between polypropylene (PP)-gels and solid PPs without solvent through mechanical and thermal analyses, by which the mechanical similarities between molten PPs and PP gels were found, leading to the reliable estimate of the mechanical properties of semi-crystalline gels.
Tetsu Ouchi, Misuzu Yamazaki, Tomoki Maeda, Atsushi Hotta   +3 more
openaire   +4 more sources

Power Management Strategy Based on Adaptive Neuro Fuzzy Inference System for AC Microgrid

IEEE Access, 2020
Microgrids (MGs) have been widely implemented as they increase the efficiency and resiliency of electrical networks. However, the uncertain nature of renewable energy resources (RERs) integrated into the MGs usually results in different technical ...
Hesham M. Fekry, Azza Ahmed Eldesouky, Ahmed M. Kassem, Almoataz Y. Abdelaziz   +3 more
doaj   +1 more source

Feasibility of utilizing polypropylene as a binder for plywood manufacture [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2009
In this study, plywood manufacture with use of polypropylene as a binder has been studied. The variables were polypropylene in three levels of 80, 120 and 160 g/m2   and maleic anhydride polypropylene coupling agent in two levels of 0 and 4 g/m2 ...
Ali akbar Enayati, Davood Rasooli, Hossein Usefi   +2 more
doaj   +1 more source

Comparative study of peritoneal adhesions after intraperitoneal implantation in rats of meshes of polypropylene versus polypropylene/polyglecaprone versus polyester/porcine collagen [PDF]

Acta Cirúrgica Brasileira, 2019
Purpose To Compare the extent and intensity of adhesions formed between the intra-abdominal organs and the intraperitoneal implants of polypropylene mesh versus polypropylene/polyglecaprone versus polyester/porcine collagen used for correction of ...
Waston Gonçalves Ribeiro, Diego Vinnicyus Santos Rodrigues, Francisco Felipe Moreira Atta, Izabelle Smith Frazão Ramos, Fabiola Nassar Sousa Frazão, Orlando Jorge Martins Torres, Marcos Bettini Pitombo   +6 more
doaj   +1 more source

Modification of polypropylene mesh by titanium compound: An in Vivo and in Vitro study

Frontiers in Materials, 2023
Objective: Previous basic studies on the use of titanized polypropylene meshes in abdominal external hernia repair are not only limited, but also highly controversial.
Yelei Xiao, Xinyue He, Guang Yang, Huanhuan Li, Yu Zhao, Xuehu Wang   +5 more
doaj   +1 more source

Influence of Flax Fibre Hybridization on Mechanical Behaviour of Sisal Fibre-Polypropylene Composites Prepared with an Injection Moulding Machine

Advances in Materials Science and Engineering, 2021
Due to their low weight, high specific strength, and low environmental impact, sisal fibre-polypropylene composites have gained popularity. However, the material has a low modulus and poor moisture resistance, among other shortcomings.
J. Allen Jeffrey, A. Sivakumar, R. Naveen Kumar, A. Anbazhagan, G. Manojkumar, Sami Al Obaid, Saleh Alfarraj, S. Sivakumar, S. Rajkumar   +8 more
doaj   +1 more source