Results 11 to 20 of about 104,176 (263)

Polyvinyl alcohol films with different degrees of hydrolysis and polymerization

Semina: Ciências Exatas e Tecnológicas, 2019
The objective of this work was to manufacture biodegradable films based on polyvinyl alcohol (PVA) and also to evaluate the effect of the different degrees of hydrolysis (DH) and degrees of polymerization (DP) of PVA on the properties of these films ...
Suzana Mali, Fabíola Azanha Carvalho, Ana Paula Bilck, Fabio Yamashita   +3 more
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Visualizing Chain Growth of Polytelluoxane via Polymerization Induced Emission

Advanced Science, 2023
Visualizing polymer chain growth is always a hot topic for tailoring structure‐function properties in polymer chemistry. However, current characterization methods are limited in their ability to differentiate the degree of polymerization in real‐time ...
Chengfei Liu, Jinyan Si, Muqing Cao, Peng Zhao, Yiheng Dai, Huaping Xu   +5 more
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Hairy Gels: A Computational Study

Gels, 2022
We present results of MD and MC simulations of the equilibrium properties of swelling gels with comb-like or bottlebrush subchains and compare them to scaling-theory predictions. In accordance with theory, the simulation results demonstrate that swelling
Filip Uhlik, Oleg V. Rud, Oleg V. Borisov, Ekaterina B. Zhulina   +3 more
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THE DEGREE OF POLYMERIZATION OF POWER TRANSFORMERS’ PAPER INSULATION

Известия высших учебных заведений: Проблемы энергетики, 2019
The paper presents the results of research and analysis of literature data on the paper insulation's thermal aging. An exponential decrease in the degree of polymerization of paper insulation from the aging time is established, at the starting time of ...
V. K. Kozlov, A. Kh. Sabitov
doaj   +1 more source

Investigation of ageing process in paper-oil insulation with visible range

Известия высших учебных заведений: Проблемы энергетики, 2017
The aging of paper-oil insulation is determined by changing the value of its degree of polymerization. Used today ways to assess the degree of polymerization of paper-oil insulation of high voltage equipment has the following disadvantages: labor input ...
V. K. Kozlov, A. K. Sabitov, B. R. Nizamutdinov   +2 more
doaj   +1 more source

The Effects of Different Degrees of Procyanidin Polymerization on the Nutrient Absorption and Digestive Enzyme Activity in Mice

Molecules, 2018
Proanthocyanidins, including polymers with both low and high degrees of polymerization, are the focus of intensive research worldwide due to their high antioxidant activity, medicinal applications, and pharmacological properties. However, the nutritional
Huairong Zhong, Yong Xue, Xiaoyuan Lu, Qiang Shao, Yuelei Cao, Zhaoxia Wu, Gao Chen   +6 more
doaj   +1 more source

Reduction of cellulose crystallization by CRISPR/Cas9 -mediated mutagenesis in the P-CR domain of CESA4 subunit of white poplar (Populus alba L.) [PDF]

Zīst/shināsī-i Giyāhī-i Īrān, 2022
Cellulose is the most abundant linear homopolysaccharide in nature, which has always raised great attention from investigators and industrial investors for use in wood and paper pulp industries, biofuel, and nanocellulose products due to its semi ...
Shahnoush Nayeri, Bahram Baghban Kohnehrouz, Seyed Abbas Rafat   +2 more
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Effects of polymerization degree on recovery behavior of PVA/PVP hydrogels as potential articular cartilage prosthesis after fatigue test

eXPRESS Polymer Letters, 2016
Poly (vinyl alcohol)/poly (vinyl pyrrolidone) (PVA/PVP) hydrogels with various polymerization degrees of PVA were synthesized by a repeated freezing-thawing method.
Y. Shi, D. S. Xiong, Y. Peng, N. Wang
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Effects of Three Types of Polymeric Proanthocyanidins on Physicochemical and In Vitro Digestive Properties of Potato Starch

Foods, 2021
The effects of three types of polymeric proanthocyanidins (PPC) with different degrees of polymerization (DP), namely PPC1 (DP = 6.39 ± 0.13), PPC2 (DP = 8.21 ± 0.76), and PPC3 (DP = 9.92 ± 0.21), on the physicochemical characteristics and in vitro ...
Jiahui Xu, Taotao Dai, Jun Chen, Xuemei He, Xixiang Shuai, Chengmei Liu, Ti Li   +6 more
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Aging characterization of thermally aged transformer paper based on its reflectance

Results in Optics
In this contribution, a simple non-destructive characterization of aging degree of oil-paper insulation materials based on the reflectance is proposed.
Najmeh Seifaddini, Issouf Fofana, N.V.P.S. Rajesh Kandala, Kok-Sing Lim, Cheong-Weng Ooi, Waldo Udos, Bekibenan Sekongo, Abdellah Chehri, Mohand Ouhrouche, Gautam Leena   +9 more
doaj   +1 more source