1
|
Kwon YR, Moon SK, Kim HC, Kim JS, Kwon M, Kim DH. Effects of Grafting Degree on the Formation of Waterborne Polyurethane-Acrylate Film with Hard Core-Soft Shell Structure. Polymers (Basel) 2023; 15:3765. [PMID: 37765619 PMCID: PMC10538150 DOI: 10.3390/polym15183765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Waterborne polyurethane-acrylate (WPUA) grafted with polyurethane was prepared to improve the film-forming ability of hard-type acrylic latex. To balance the film-formation ability and hardness, the WPUA latex was designed with a hard core (polyacrylate) and soft shell (polyurethane). The grafting ratio was controlled through varying the content of 2-hydroxyethyl methacrylate (HEMA) used to cap the ends of the polyurethane prepolymer. The morphologies of the latex particles, film surface, and fracture surface of the film were characterized through transmission electron microscopy, atomic force microscopy, and scanning electron microscopy, respectively. An increase in the grafting ratio resulted in the enhanced miscibility of polyurethane and polyacrylate but reduced adhesion between particles and increased minimum film formation temperature. In addition, grafting was essential to obtain transparent WPUA films. Excessive grafting induced defects such as micropores within the film, leading to the decreased hardness and adhesive strength of the film. The optimal HEMA content for the preparation of a WPUA coating with excellent film-forming ability and high hardness in ambient conditions was noted to be 50%. The final WPUA film was prepared without coalescence agents that generate volatile organic compounds.
Collapse
Affiliation(s)
- Yong Rok Kwon
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
- Department of Material Chemical Engineering, Hanyang University, 55, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea
| | - Seok Kyu Moon
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
- School of Integrative Engineering, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Hae Chan Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
- Department of Material Chemical Engineering, Hanyang University, 55, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea
| | - Jung Soo Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
| | - Miyeon Kwon
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
| | - Dong Hyun Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), 143, Hanggaul-ro, Sangnok-gu, Ansan-si 15588, Republic of Korea; (Y.R.K.); (S.K.M.); (H.C.K.); (J.S.K.); (M.K.)
| |
Collapse
|
2
|
Amorim Costa AC, Rodrigues Pontes da Costa W, Viana Amorim L, Alves de Medeiros Nascimento RC, Castro Nóbrega K, do Nascimento Gonçalves RL. Influence of halite particles on the stability and physical properties of inverse olefin emulsions. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2048328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anna Carolina Amorim Costa
- PEFLAB (Laboratory of Research on Drilling Fluids), Universidade Federal de Campina Grande (UFCG), Paraíba, Brazil
| | | | - Luciana Viana Amorim
- PEFLAB (Laboratory of Research on Drilling Fluids), Universidade Federal de Campina Grande (UFCG), Paraíba, Brazil
| | | | - Karine Castro Nóbrega
- PEFLAB (Laboratory of Research on Drilling Fluids), Universidade Federal de Campina Grande (UFCG), Paraíba, Brazil
| | | |
Collapse
|
3
|
Jiang Y, Wang S, Xu C, Du J. Synthesis and application of hybrid waterborne polyurethane/acrylate dispersion with diol grafting agent containing carbon–carbon double bond. J Appl Polym Sci 2022. [DOI: 10.1002/app.51681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yang Jiang
- College of Textiles and Clothing Qingdao University Qingdao China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology Tai'an China
| | - Shaofei Wang
- Key Laboratory of Eco‐Textile, Ministry of Education, College of Textiles Science and Engineering Jiangnan University Wuxi China
| | - Changhai Xu
- College of Textiles and Clothing Qingdao University Qingdao China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology Tai'an China
| | - Jinmei Du
- College of Textiles and Clothing Qingdao University Qingdao China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology Tai'an China
| |
Collapse
|
4
|
Pedrosa VM, Sanches AG, da Silva MB, Gratão PL, Isaac VL, Gindri M, Teixeira GH. Production of mycosporine-like amino acid (MAA)-loaded emulsions as chemical barriers to control sunscald in fruits and vegetables. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:801-812. [PMID: 34223643 DOI: 10.1002/jsfa.11415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 06/11/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Sunscald is a physiological disorder that occurs in many horticultural products when exposed to excessive solar radiation and high temperatures. Traditionally, sunscald is controlled using physical barriers that reflect radiation, however this practice is not always efficient. A possible alternative would be the use of chemical barriers, such as mycosporine-like amino acids (MAAs), which protect aquatic organisms against ultraviolet (UV) radiation. Thus, this study aimed to develop a lipid-based emulsion containing MAAs for using in the preharvest of horticultural products. RESULTS Emulsions were developed using 10% (w/v) of corn oil (CO) and soybean oil (SO), carnauba wax (CW), and beeswax (BW) as lipid bases (LBs). The emulsion containing CW and ammonium hydroxide was the most stable, resembling commercial wax. Therefore, this formulation was used as the basis for the incorporation of the commercial product Helioguard™ 365, a source of MAA, in concentrations of 0%, 1%, 2%, and 4% (v/v). The MAA incorporation resulted in little modifications in the stability of the emulsion, providing an increase in the absorbance with peaks in the UV-B ranging from 280 to 300 nm. CONCLUSION The lipid-base emulsion containing MAAs could be used as a chemical barrier to control sunscald in horticultural products. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Vanessa Md Pedrosa
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| | - Alex G Sanches
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| | - Maryelle B da Silva
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| | - Priscila L Gratão
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Biologia Aplicada à Agropecuária, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| | - Vera Lb Isaac
- Faculdade de Ciências Farmacêuticas (FCF), Campus de Araraquara, Departamento de Fármacos e Medicamentos Rodovia Araraquara Jaú, Universidade Estadual Paulista (UNESP), Araraquara, Brazil
| | - Marcelo Gindri
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Zootecnia, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| | - Gustavo Ha Teixeira
- Faculdade de Ciências Agrárias e Veterinárias (FCAV), Campus de Jaboticabal, Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (UNESP), Jaboticabal, Brazil
| |
Collapse
|
5
|
Dong X, Ren J, Duan Y, Wu D, Lin L, Shi J, Jia R, Xu X, He X. Preparation and properties of green
UV
‐curable itaconic acid cross‐linked modified waterborne polyurethane coating. J Appl Polym Sci 2021. [DOI: 10.1002/app.52042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiangbin Dong
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
| | - Jingyu Ren
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
| | - Yanjie Duan
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
| | - Dandan Wu
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
| | - Lin Lin
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
- Research Laboratory for Functional Nanomaterial National Engineering Research Center for Nanotechnology Shanghai China
| | - Jichao Shi
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
| | - Runping Jia
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
- Research Laboratory for Functional Nanomaterial National Engineering Research Center for Nanotechnology Shanghai China
| | - Xiaowei Xu
- School of Materials Science and Engineering Shanghai Institute of Technology Shanghai China
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Xinyao He
- The Research and Development Department Jiahua Chemical (Shanghai) Co., Ltd. Shanghai China
| |
Collapse
|
6
|
Mohanty SR, Mohanty S, Samal SK, Nayak SK. Acrylic‐ester‐polyol based novel two‐component polyurethane clear coat: Evaluation of performance characteristics. J Appl Polym Sci 2021. [DOI: 10.1002/app.50794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Smruti Ranjan Mohanty
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
| | - Smita Mohanty
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
| | - Sushanta K. Samal
- Central Institute Of Petrochemicals Engineering and Technology Raipur Chhattisgarh India
| | - Sanjay K. Nayak
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
| |
Collapse
|
7
|
Vaidya SM, Jadhav SM, Patil MJ, Mestry SU, Mahajan UR, Mhaske ST. Recent developments in waterborne polyurethane dispersions (WPUDs): a mini-review on thermal and mechanical properties improvement. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03814-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
8
|
Gu H, Geng H, Wang D, Li W. A new method for the treatment of kitchen waste: Converting it into agronomic sprayable mulch film. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 126:527-535. [PMID: 33839404 DOI: 10.1016/j.wasman.2021.03.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/17/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
This report describes a new method for converting kitchen waste (KW) with high water content into mulch films that can be applied in agricultural production. Specifically, the KW was emulsion polymerized with acrylic monomers (in various proportions) to obtain a series of sprayable bio-based KW-acrylate mulch films. The films' properties and performances were evaluated, and the experimental results showed that the KW-acrylate mulch films exhibited excellent sprayability, membrane formation, and mechanical properties, which allowed them to effectively reduce soil water evaporation (by 13-50%) and increase soil temperature (by 1.9-6.7%). Compared with bare soil, the soil treated with the optimized KW-acrylate mulch film increased the germination rate of rapeseeds by 20% and the yield of Chenopodium album by 0.7 times; the mulch film biodegradation then reached 70% after 100 days.
Collapse
Affiliation(s)
- Haifeng Gu
- Department of Chemistry and Material Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Haohao Geng
- Department of Chemistry and Material Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Danyang Wang
- Department of Chemistry and Material Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Wenzhuo Li
- Department of Chemistry and Material Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China.
| |
Collapse
|
9
|
Cobaj A, Hu Y, Soucek MD. Effect of Incorporating a Diurethane Monomethacrylate Monomer into Acrylic Latexes. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c06093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anisa Cobaj
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Yongan Hu
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Mark D. Soucek
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| |
Collapse
|
10
|
Dai M, Wang J, Zhang Y. Improving water resistance of waterborne polyurethane coating with high transparency and good mechanical properties. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124994] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
11
|
Huang T, Yuan QX, Gong SL. Emulsifier-Free Acrylate-Based Emulsion Prepared by Reverse Iodine Transfer Polymerization. Polymers (Basel) 2020; 12:E730. [PMID: 32214014 PMCID: PMC7183055 DOI: 10.3390/polym12030730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 03/21/2020] [Indexed: 11/17/2022] Open
Abstract
The self-emulsifying acrylate-based emulsions with solid content 45 wt.% were prepared in 3.5 h by reverse iodine transfer polymerization (RITP), and the polymer molecular weight (Mn) could be 30,000 g·mol-1. The influences of methacrylic acid (MAA) amount, soft/hard monomer mass ratio, and iodine amount on polymerization and latex were investigated. A moderate amount of ionized MAA was needed to stabilize the emulsion. Glass transition temperature (Tg) was decreased with the increasing mass ratio of soft/hard monomer. A higher iodine amount resulted in lower Mn. The increased Mn after chain extension of the polymer with water-insoluble monomers in iterative one-pot method proved the living of polymer. Compared with conventional emulsion polymerization, molecular weight (Mn) could be controlled, and Mn of polymer synthesized in RITP emulsion polymerization is higher; emulsion of polyacrylate-containing hydroxyl monomer units prepared by RITP emulsifier-free radical polymerization is more stable. Good properties, such as hardness, water resistance, adhesion, and increased value of maximum tensile of films modified by reaction of polyacrylate with melamine-formaldehyde (MF) resin, indicated potential application in baking coating.
Collapse
Affiliation(s)
| | | | - Shu-Ling Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China; (T.H.); (Q.-X.Y.)
| |
Collapse
|
12
|
Fei G, Geng H, Wang H, Liu X, Liao Y, Shao Y, Wang M. Optimization of Waterborne Poly(Urethane-Acrylate) Nanoemulsions Based on Cationic Polymerizable Macrosurfactants with Different Hydrophobic Side Chain Length. Polymers (Basel) 2019; 11:E1922. [PMID: 31766546 PMCID: PMC6960594 DOI: 10.3390/polym11121922] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 11/29/2022] Open
Abstract
In situ surfactant-free emulsion polymerization can help avoid the utilization of harmful co-solvents and surfactants in the preparation of waterborne poly(urethane-acrylate) (WPUA) nanoemulsion, but the solid content is extremely limited, which will affect the drying rate and film-forming properties. The utilization of polymerizable macrosurfactants can overcome the above problems. However, the research on cationic polymerizable macrosurfactants is extremely scarce. In this work, cationic dimethylaminoethyl methacrylate-b-alkyl methacrylates block copolymers (PDM-b-PRMA) with terminal double bonds and different hydrophobic side chain (HSC) lengths were fabricated via catalytic chain transfer polymerization (CCTP). HSC length of PDM-b-PRMA played an important role in the phase inversion, morphology, rheological behavior of WPUA nanoemulsions, as well as the comprehensive performance of WPUA/PDM-b-PRMA films. Polymerizable PDM-b-PBMA macrosurfactant had smaller molecular weight, lower surface tension and colloidal size than the random copolymer (PDM-co-PBMA) by traditional free radical polymerization. It was easy for PDM-b-PRMA to orientedly assemble at the oil/water interface and provide better emulsifying ability when the carbon number of HSC was four. Compared with WPUA/PDM-co-PBMA, WPUA/PDM-b-PBMA had a smaller particle size, stability and better film-forming properties. This work elucidated the mechanisms of HSC length in the fabrication of cationic PDM-b-PRMA and provides a novel strategy to prepare cationic WPUA of high performance.
Collapse
Affiliation(s)
- Guiqiang Fei
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| | - Huanqiong Geng
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| | - Haihua Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
- Shaanxi Institute of Technology, College of Chemical Engineering, Xi’an 710300, China
| | - Xuan Liu
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| | - Yong Liao
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| | - Yanming Shao
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| | - Mengxi Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China; (G.F.); (H.G.); (X.L.); (Y.L.); (Y.S.); (M.W.)
| |
Collapse
|
13
|
Mehravar S, Ballard N, Tomovska R, Asua JM. Polyurethane/Acrylic Hybrid Waterborne Dispersions: Synthesis, Properties and Applications. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02324] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Samane Mehravar
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian 20018, Spain
| | - Nicholas Ballard
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian 20018, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Radmila Tomovska
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian 20018, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - José M. Asua
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian 20018, Spain
| |
Collapse
|
14
|
Liu Y, Liang H, Li S, Liu D, Long Y, Liang G, Zhu F. Preparation of waterborne polyurethane with high solid content and elasticity. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1795-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
Han Y, Hu J, Xin Z. In-Situ Incorporation of Alkyl-Grafted Silica into Waterborne Polyurethane with High Solid Content for Enhanced Physical Properties of Coatings. Polymers (Basel) 2018; 10:E514. [PMID: 30966548 PMCID: PMC6415436 DOI: 10.3390/polym10050514] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/03/2018] [Accepted: 05/08/2018] [Indexed: 11/30/2022] Open
Abstract
Waterborne polyurethane (WPU) with high solid content (45%) was obtained by utilizing dimethylol propionic acid (DMPA) and ethoxylated capped polymeric diol as complex hydrophilic groups. Alkyl-grafted silica was incorporated into polymer matrix through in situ polymerization to improve the performance of coatings casted from WPU dispersions. The addition of alkyl-grafted silica enlarged the particle size distribution whilst increased emulsion viscosity, which showed little influence on attainment of high solid content for WPU. The properties of obtained WPU/Silica coatings were investigated. Results showed that the functionalized surface of silica provides good compatibility with the WPU matrix, which promoted the homogeneous dispersion of silica particles. This facilitated the formation of nanosized silica papillae on coatings, contributing to surface roughness and hydrophobicity. Solvent resistance of WPU was enhanced with existence of alkyl-grafted silica particles. The WPU/Silica coatings also displayed improved thermal stability due to the thermal insulation ability and tortuous path effect of silica. Besides this, valid interactions between silica and WPU resulted in hybrid microphase of which the synergistic effect imparted superior mechanical properties at relatively low loadings of silica (2%). The facile technique presented here will provide an effective and promising method for preparing WPU hybrids with enhanced performance.
Collapse
Affiliation(s)
- Yanting Han
- Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China.
| | - Jinlian Hu
- Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China.
| | - Zhongyin Xin
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610044, China.
| |
Collapse
|