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Kim J, Lee J, Bezek LB, Park B, Lee KS. Use of Nucleating Agent NA11 in the Preparation of Polyvinylidene Fluoride Dual-Layer Hollow Fiber Membranes. MEMBRANES 2023; 13:75. [PMID: 36676882 PMCID: PMC9864858 DOI: 10.3390/membranes13010075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Polyvinylidene fluoride (PVDF) dual-layer hollow fiber membranes were simultaneously fabricated by thermally induced phase separation (TIPS) and non-solvent induced phase separation (NIPS) methods using a triple orifice spinneret (TOS) for water treatment application. The support layer was prepared from a TIPS dope solution, which was composed of PVDF, gamma-butyrolactone (GBL), and N-methyl-2-pyrrolidone (NMP). The coating layer was prepared from a NIPS dope solution, which was composed of PVDF, N,N-dimethylacetamide (DMAc), and polyvinylpyrrolidone (PVP). In order to improve the mechanical strength of the dual-layer hollow fiber, a nucleating agent, sodium 2,2'-methylene bis-(4,6-di-tert-butylphenyl) phosphate (NA11), was added to the TIPS dope solution. The performance of the membrane was evaluated by surface and cross-sectional morphology, water flux, mechanical strength, and thermal property. Our results demonstrate that NA11 improved the mechanical strength of the PVDF dual-layer hollow fiber membranes by up to 42%. In addition, the thickness of the coating layer affected the porosity of the membrane and mechanical performance to have high durability in enduring harsh processing conditions.
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Affiliation(s)
- Jihyeon Kim
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jinwon Lee
- LOTTE Chemical Co., Ltd., Daejeon 305-726, Republic of Korea
| | | | - Bumjin Park
- LOTTE Chemical Co., Ltd., Daejeon 305-726, Republic of Korea
| | - Kwan-Soo Lee
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- LOTTE Chemical Co., Ltd., Daejeon 305-726, Republic of Korea
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Kida T, Kimura T, Eno A, Janchai K, Yamaguchi M, Otsuki Y, Kimura T, Mizukawa T, Murakami T, Hato K, Okawa T. Effect of Ultra-High-Molecular-Weight Molecular Chains on the Morphology, Crystallization, and Mechanical Properties of Polypropylene. Polymers (Basel) 2021; 13:4222. [PMID: 34883725 PMCID: PMC8659738 DOI: 10.3390/polym13234222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 01/01/2023] Open
Abstract
The effects of the ultra-high-molecular-weight (UHMW) component of polypropylene (PP) on its rheological properties, crystallization behavior, and solid-state mechanical properties were investigated using various measurement techniques. The terminal relaxation time-determined by measuring the linear viscoelasticity-was increased by adding the UHMW component. The increase in the melt elasticity produced by adding the UHMW component was observed by measuring the steady-state shear flow, although the shear viscosity was not greatly affected. Owing to the long characteristic time of the Rouse relaxation of the UHMW component, PP with the UHMW component formed highly oriented structures through a shear-induced crystallization process. The addition of the UHMW component enhanced the orientation and regularity of crystalline structure for extruded films. Therefore, the Young's modulus, yield stress, and strength were higher in the PP film containing the UHMW component than in one without the UHMW component, irrespective of the direction of tensile deformation.
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Affiliation(s)
- Takumitsu Kida
- Japan Advanced Institute of Science and Technology, School of Materials Science, 1-1 Asahidai, Nomi 9231292, Japan; (T.K.); (A.E.); (K.J.); (M.Y.)
| | - Takeyoshi Kimura
- Japan Advanced Institute of Science and Technology, School of Materials Science, 1-1 Asahidai, Nomi 9231292, Japan; (T.K.); (A.E.); (K.J.); (M.Y.)
| | - Ayaka Eno
- Japan Advanced Institute of Science and Technology, School of Materials Science, 1-1 Asahidai, Nomi 9231292, Japan; (T.K.); (A.E.); (K.J.); (M.Y.)
| | - Khunanya Janchai
- Japan Advanced Institute of Science and Technology, School of Materials Science, 1-1 Asahidai, Nomi 9231292, Japan; (T.K.); (A.E.); (K.J.); (M.Y.)
- Petrochemical and Polymer Science, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Masayuki Yamaguchi
- Japan Advanced Institute of Science and Technology, School of Materials Science, 1-1 Asahidai, Nomi 9231292, Japan; (T.K.); (A.E.); (K.J.); (M.Y.)
| | - Yasuhiko Otsuki
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
| | - Tokutaro Kimura
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
| | - Tomoaki Mizukawa
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
| | - Tomoya Murakami
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
| | - Kazuki Hato
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
| | - Tomoya Okawa
- Packaging and Industrial Materials Laboratory, Prime Polymer Co., Ltd., 3 Chigusa-Kaigan, Ichihara 2990108, Japan; (Y.O.); (T.K.); (T.M.); (T.M.); (K.H.); (T.O.)
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Iwasaki S, Inoue M, Takei Y, Nishikawa R, Yamaguchi M. Modulus enhancement of polypropylene by sorbitol nucleating agent in flow field. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shohei Iwasaki
- School of Materials Science Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
- Research & Development Department, Research & Development Division New Japan Chemical Co., Ltd. Kyoto Japan
| | - Mitsuko Inoue
- Research & Development Department, Research & Development Division New Japan Chemical Co., Ltd. Kyoto Japan
| | - Yurie Takei
- Research & Development Department, Research & Development Division New Japan Chemical Co., Ltd. Kyoto Japan
| | - Riho Nishikawa
- School of Materials Science Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
| | - Masayuki Yamaguchi
- School of Materials Science Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
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Iwasaki S, Uchiyama Y, Tenma M, Yamaguchi M. Effect of Neutralizer on Transparency of Nucleating Agent-Containing Polypropylene. Polymers (Basel) 2021; 13:polym13050680. [PMID: 33668226 PMCID: PMC7956184 DOI: 10.3390/polym13050680] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/18/2021] [Accepted: 02/20/2021] [Indexed: 11/16/2022] Open
Abstract
The effects of neutralizer species on the transparency of injection-molded plates were studied using isotactic polypropylene (PP) containing a crystal nucleating agent-i.e., 1,3:2,4-bis-o-(4-methylbenzylidene)-d-sorbitol (MDBS). A plate containing lithium stearate (StLi) was more transparent than one containing calcium stearate (StCa) when the MDBS content was 0.1 wt. %. The addition of StLi accelerated the formation of MDBS fibers and the crystallization of PP. However, when the MDBS content was 1.0 wt. %, StCa improved the transparency more effectively than StLi. These results indicate that the combination of an appropriate amount of MDBS and the correct neutralizer species is critical for enhancing the transparency of injection-molded PP plates.
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Affiliation(s)
- Shohei Iwasaki
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; (S.I.); (M.T.)
- Research & Development Department, Research & Development Division, New Japan Chemical Co., Ltd., 13 Yoshijima, Yaguracho, Fushimi, Kyoto 612-8224, Japan;
| | - Yohei Uchiyama
- Research & Development Department, Research & Development Division, New Japan Chemical Co., Ltd., 13 Yoshijima, Yaguracho, Fushimi, Kyoto 612-8224, Japan;
| | - Miwa Tenma
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; (S.I.); (M.T.)
| | - Masayuki Yamaguchi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; (S.I.); (M.T.)
- Correspondence: ; Tel.: +81-761-51-1621; Fax: +81-761-51-1149
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Nishikawa R, Aridome N, Ojima N, Yamaguchi M. Structure and properties of fiber-reinforced polypropylene prepared by direct incorporation of aqueous solution of poly(vinyl alcohol). POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122566] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nishikawa R, Yamaguchi M. Effect of carbon nanotube addition on structure and properties for extrudates of high‐density polyethylene. J Appl Polym Sci 2019. [DOI: 10.1002/app.48010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Riho Nishikawa
- School of Materials Science, Japan Advanced Institute of Science and Technology 1‐1 Asahidai, Nomi Ishikawa 923‐1292 Japan
| | - Masayuki Yamaguchi
- School of Materials Science, Japan Advanced Institute of Science and Technology 1‐1 Asahidai, Nomi Ishikawa 923‐1292 Japan
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