Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis
Carboxyl-type boronic acid copolymers (CBACs) were synthesized by a radical polymerization method and used for the preparation of polyvinyl alcohol (PVA)-based composite membranes via a solution mixture method. The as-prepared composite membranes exhibited a water uptake (W<sub>R</sub>)...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/10/2360 |
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| author | Lizhen Peng Xiaonan Huang Dandan Liu Jibin Miao Bin Wu Ming Cao Qianqian Ge Bin Yang Lifen Su Ru Xia Zhengzhi Zheng Peng Chen Jiasheng Qian |
| author_facet | Lizhen Peng Xiaonan Huang Dandan Liu Jibin Miao Bin Wu Ming Cao Qianqian Ge Bin Yang Lifen Su Ru Xia Zhengzhi Zheng Peng Chen Jiasheng Qian |
| author_sort | Lizhen Peng |
| collection | DOAJ |
| description | Carboxyl-type boronic acid copolymers (CBACs) were synthesized by a radical polymerization method and used for the preparation of polyvinyl alcohol (PVA)-based composite membranes via a solution mixture method. The as-prepared composite membranes exhibited a water uptake (W<sub>R</sub>) of 122.6–150.0%, an ion exchange capacity (IEC) of 0.0147–0.0518 mmol g<sup>−1</sup>, and excellent mechanical (elongation at break (E<sub>b</sub>) of 103.8–148.4%, tensile strength (TS) of 38.7–58.6 MPa) and thermal stability. The alkali resistances of the as-prepared membranes were tested by immersing the samples into 2 mol L<sup>−1</sup> NaOH solutions at 25 °C for 60 h, and the results were encouraging: the mass loss and swelling degree of the as-prepared membranes were in the ranges of 1.9–5.9% and 222.6–241.9%, respectively. The separation performances of the as-prepared membranes were evaluated by the diffusion dialysis (DD) process with an NaOH/Na<sub>2</sub>WO<sub>4</sub> mixture at room temperature. The results demonstrated that the dialysis coefficients of hydroxide (U<sub>OH</sub>) were in the range of 0.0147–0.0347 m h<sup>−1</sup>, and the separation factors (S) were in the range of 29.5–62.6. The introduced carboxyl groups from CBACs and the –OH groups from PVA were both deemed to play significant roles in the promotion of ion transport: the –COO<sup>−</sup> groups formed negatively charged transport channels for Na<sup>+</sup> by electrostatic attraction, and the –OH groups promoted the transport of OH<sup>−</sup> via hydrogen bonding. |
| first_indexed | 2024-03-10T15:37:34Z |
| format | Article |
| id | doaj.art-7ef59731d24c4493b83fe899f5da0f16 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T15:37:34Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-7ef59731d24c4493b83fe899f5da0f162023-11-20T17:05:36ZengMDPI AGPolymers2073-43602020-10-011210236010.3390/polym12102360Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion DialysisLizhen Peng0Xiaonan Huang1Dandan Liu2Jibin Miao3Bin Wu4Ming Cao5Qianqian Ge6Bin Yang7Lifen Su8Ru Xia9Zhengzhi Zheng10Peng Chen11Jiasheng Qian12School of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaSchool of Chemistry & Chemical Engineering, Anhui University, Anhui Province Key Laboratory of Environment-friendly Polymer Materials, Hefei 230601, ChinaCarboxyl-type boronic acid copolymers (CBACs) were synthesized by a radical polymerization method and used for the preparation of polyvinyl alcohol (PVA)-based composite membranes via a solution mixture method. The as-prepared composite membranes exhibited a water uptake (W<sub>R</sub>) of 122.6–150.0%, an ion exchange capacity (IEC) of 0.0147–0.0518 mmol g<sup>−1</sup>, and excellent mechanical (elongation at break (E<sub>b</sub>) of 103.8–148.4%, tensile strength (TS) of 38.7–58.6 MPa) and thermal stability. The alkali resistances of the as-prepared membranes were tested by immersing the samples into 2 mol L<sup>−1</sup> NaOH solutions at 25 °C for 60 h, and the results were encouraging: the mass loss and swelling degree of the as-prepared membranes were in the ranges of 1.9–5.9% and 222.6–241.9%, respectively. The separation performances of the as-prepared membranes were evaluated by the diffusion dialysis (DD) process with an NaOH/Na<sub>2</sub>WO<sub>4</sub> mixture at room temperature. The results demonstrated that the dialysis coefficients of hydroxide (U<sub>OH</sub>) were in the range of 0.0147–0.0347 m h<sup>−1</sup>, and the separation factors (S) were in the range of 29.5–62.6. The introduced carboxyl groups from CBACs and the –OH groups from PVA were both deemed to play significant roles in the promotion of ion transport: the –COO<sup>−</sup> groups formed negatively charged transport channels for Na<sup>+</sup> by electrostatic attraction, and the –OH groups promoted the transport of OH<sup>−</sup> via hydrogen bonding.https://www.mdpi.com/2073-4360/12/10/2360carboxyl-type boronic acid copolymers (CBACs)composite membranesalkali recoverydiffusion dialysis (DD) |
| spellingShingle | Lizhen Peng Xiaonan Huang Dandan Liu Jibin Miao Bin Wu Ming Cao Qianqian Ge Bin Yang Lifen Su Ru Xia Zhengzhi Zheng Peng Chen Jiasheng Qian Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis Polymers carboxyl-type boronic acid copolymers (CBACs) composite membranes alkali recovery diffusion dialysis (DD) |
| title | Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis |
| title_full | Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis |
| title_fullStr | Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis |
| title_full_unstemmed | Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis |
| title_short | Preparation of Polyvinyl Alcohol (PVA)-Based Composite Membranes Using Carboxyl-Type Boronic Acid Copolymers for Alkaline Diffusion Dialysis |
| title_sort | preparation of polyvinyl alcohol pva based composite membranes using carboxyl type boronic acid copolymers for alkaline diffusion dialysis |
| topic | carboxyl-type boronic acid copolymers (CBACs) composite membranes alkali recovery diffusion dialysis (DD) |
| url | https://www.mdpi.com/2073-4360/12/10/2360 |
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