Article
Polymer Science
Seong Baek Yang, Mohammad Rezaul Karim, Jungeon Lee, Jeong Hyun Yeum, Sabina Yeasmin
Summary: Novel poly(vinyl alcohol)/poly(vinyl butyral-vinyl alcohol) films with improved hydrophobicity were prepared by saponification of poly(vinyl acetate)/poly(vinyl butyral) blend films. The saponification process was confirmed by various analysis techniques. The hydrophobicity of the films increased with increasing poly(vinyl butyral) content. The saponified films exhibited improved mechanical properties and unique surface characteristics. These films have potential applications in biomaterials, filters, and medical devices.
Article
Chemistry, Physical
Qian Feng, Xuejie Li, Zhigang Peng, Yong Zheng
Summary: A sulfonated polycarboxylate (SPC) dispersant suitable for oil well cement was successfully synthesized in this study, and its molecular structure was characterized using various techniques. The results showed that SPC has good dispersion performance, can effectively reduce particle size, and improve the workability and rheological properties of cement slurry. Compared to conventional polycarboxylate, SPC has a less retardation effect on cement slurry, which can reduce detrimental pores in cement stone, increase compactness, and improve early compressive strength.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Hamid Reza Hedayati, Manounchehr Khorasani, Mostafa Ahmadi, Nicholas Ballard
Summary: In this study, well-defined and linear PVAc was synthesized using RAFT polymerization method, overcoming the difficulties in controlling molecular weight distribution during the hydrolysis of PVAc. This offers a potential route to the production of PVAc and PVA products with uniform properties.
Article
Polymer Science
Xiaoyan Chen, Weizhi Huang, Bobing He, Yafeng Zhang
Summary: The article introduces a new type of modified tackifying dispersant PVA-AA-t, prepared by high-temperature solution polymerization method, with excellent thickening and dispersing properties.
Article
Nanoscience & Nanotechnology
Yuyang Zhao, Jinrui Zhang, Gang Qiao, Dongshuai Hou, Biqin Dong, Hongyan Ma
Summary: This study investigates the synergistic effect of carboxylated carbon nanotubes and poly(vinyl alcohol) on the mechanical properties of cement paste. The results demonstrate that their combination significantly increases the flexural strength of the cement paste and the strength enhancement mechanism is revealed from the perspectives of cement matrix enhancement and interface enhancement.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Xiaoying Wu, Ming Li, YiJing Sun, Cen Guo, Zhihao Zhang, Lewu Fang
Summary: In this study, an organic/inorganic fluid loss additive was prepared using modified nano silica as auxiliary material. The resulting copolymer exhibited good thermal stability, filtration performance, and prevented leakage of oil well cement slurry.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Shane D. Frazier, Aparna J. Lobo, Mohammad G. Matar, Wil V. Srubar
Summary: This study presents experimental evidence that specific molecular weights of poly(vinyl alcohol) (PVA) are necessary to enhance the freeze-thaw resistance of portland cement paste. The enhancement is achieved through the interaction between biomimetic polymers like PVA and ice, rather than improved hydrophobicity or an adequately entrained air void system.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Engineering, Chemical
Chia-Yu Lai, Yi-Ming Sun, Ying-Ling Liu
Summary: This study aimed to improve the performance of poly (vinyl alcohol) (PVA) membranes by adding water-soluble ozonated lignin (Ws-OL) as an additive to increase the water permeation flux. The modified PVA membranes showed enhanced surface hydrophilicity, reduced crystallinity, and smaller crystallite sizes compared to the neat PVA membrane. Under the optimized condition, the PVA membranes modified with 50% Ws-OL and cross-linked with 4-sulfophthalic acid (SPTA) exhibited a water permeation flux of 78,630 g m-2 h-1 and a salt rejection of 99.91% in a 3.5% NaCl(aq) solution at 25 degrees C.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Food Science & Technology
Changfeng Ge, Baxter Lansing, Christopher L. Lewis
Summary: The study found that blends containing 25% or 75% TPS could serve as alternative barrier layers due to their relatively low material cost, good oxygen barrier performance and adequate material properties.
FOOD PACKAGING AND SHELF LIFE
(2021)
Article
Chemistry, Physical
Seong Baek Yang, Dae Won Jeong, Jungeon Lee, Sabina Yeasmin, Chang-Kil Kim, Jeong Hyun Yeum
Summary: In this study, PVA/P(MMA-MAA) blend films were prepared for the first time using the saponification method in a heterogeneous medium. The conversion of PVAc/PMMA into PVA/P(MMA-MAA) films was confirmed by analyzing surface morphology and characteristics, as well as the improvement in thermal properties. The results suggest that blend films based on the hydrophilic/hydrophobic strategy have potential as promising medical materials.
Article
Food Science & Technology
Guelce Bedis Kaynarca, Deniz Damla Altan Kamer, Tuncay Gumus, Osman Sagdic
Summary: This study examined the effect of grape pomace extract (GP) on PVA/FG blend films. The addition of different ratios of GP to the films improved their rheological properties and resulted in structural repositioning. GP enhanced intermolecular polymer interactions and surface smoothness. The addition of GP increased melting temperature, improved flexibility, and enhanced water solubility parameter and antioxidant activity of the films. A GP-enriched PVA/FG film can be used for food packaging purposes.
FOOD PACKAGING AND SHELF LIFE
(2023)
Review
Food Science & Technology
Pradeep Kumar Panda, Kambiz Sadeghi, Jongchul Seo
Summary: The usability and effectiveness of plastic polymers are changing with advances in technology and research. Poly (vinyl alcohol) (PVOH) based materials, due to their biocompatibility, biodegradability, antimicrobial ability, non-toxicity, and easy film-forming ability, have been widely applied in various fields, especially in food packaging. With the advancement of polymer science, there is a growing demand for natural polymers that can contribute to the development of eco-friendly packaging systems. This review focuses on the recent development of PVOH/natural polymer-based films for food packaging applications, as well as the use of PVOH/bio-waste and fruit peel-based composite films. The review also discusses research trends and publication metrics regarding PVOH films.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Chemistry, Applied
Pradeep Kumar Panda, Kitae Park, Jongchul Seo
Summary: Poly (vinyl alcohol) (PVA)/regenerated chitosan (RCs) blend films (PRCs) were developed using a solution casting method. The PRCs films exhibited superior physicochemical and functional properties compared to PVA/Cs (PCs) films. The barrier, antioxidant, and antibacterial properties were dependent on the amount of RCs. The PRCs films also showed strong free radical scavenging activity and enhanced antibacterial efficacy against Escherichia coli.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Yingxu Song, Sumei Zhang, Jian Kang, Jinyao Chen, Ya Cao
Summary: Annealing PVA films at different temperatures affects the water absorption, leading to changes in the formation of PVA-iodine complexes. The amount of PVA segments with moderate hydration has a significant impact on the complexation process.
Article
Chemistry, Physical
Ming Li, Weiyuan Xiao, Hua Zhang, Yongjin Yu, Zishuai Liu, Dongbo Xie
Summary: In this study, a high temperature resistant and salt-tolerant FLA (SSS/HAM/IA) was synthesized and found to exhibit good temperature resistance and fluid loss performance, suitable for use in oil-well cement systems within a temperature range of 30 to 180 degrees C. The addition of 6% SSS/HAM/IA at 120 degrees C resulted in an API fluid loss of less than 50 mL in saturated brine cement slurry systems, showcasing strong salt resistance due to the cross-linking properties of HAM molecule.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Marco Liebscher, Alex Lange, Christof Schroefl, Robert Fuge, Viktor Mechtcherine, Johann Plank, Albrecht Leonhardt
JOURNAL OF MATERIALS SCIENCE
(2017)
Article
Chemistry, Physical
Marco Liebscher, Robert Fuge, Christof Schroefl, Alex Lange, Anja Caspari, Cornelia Bellmann, Viktor Mechtcherine, Johann Plank, Albrecht Leonhardt
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Inorganic & Nuclear
Somruedee Klaithong, Daniel Van Opdenbosch, Cordt Zollfrank, Johann Plank
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
(2017)
Article
Construction & Building Technology
Markus Schoenlein, Johann Plank
CEMENT AND CONCRETE RESEARCH
(2018)
Article
Construction & Building Technology
V. Kanchanason, J. Plank
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
M. Perez-Nicolas, J. Plank, D. Ruiz-Izuriaga, I. Navarro-Blasco, J. M. Fernandez, J. I. Alvarez
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
My Linh Vo, Johann Plank
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Chemistry, Inorganic & Nuclear
J. Plank, M. Schoenlein, V Kanchanason
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2018)
Article
Materials Science, Ceramics
Markus Schoenlein, Johann Plank
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
Chayani Phattharachindanuwong, Nanthiya Hansupalak, Johann Plank, Yusuf Chisti
MATERIALS RESEARCH BULLETIN
(2018)
Proceedings Paper
Construction & Building Technology
M. Schmid, N. Beuntner, K. -Ch. Thienel, J. Plank
CALCINED CLAYS FOR SUSTAINABLE CONCRETE
(2018)
Article
Construction & Building Technology
V. Kanchanason, J. Plank
CEMENT AND CONCRETE RESEARCH
(2017)
Article
Construction & Building Technology
Tsuyoshi Hirata, Paulo Branicio, Jun Ye, Jianwei Zheng, Yoshikazu Tomike, Alex Lange, Johann Plank, Michael Sullivan
ADVANCES IN CEMENT RESEARCH
(2017)
Article
Construction & Building Technology
Markus R. Meier, Teepakorn Napharatsamee, Johann Plank
CONSTRUCTION AND BUILDING MATERIALS
(2017)
Article
Chemistry, Inorganic & Nuclear
Daniel R. Froehlich, Martin M. Maiwald, Franziska Taube, Johann Plank, Petra J. Panak
DALTON TRANSACTIONS
(2017)