Enhanced performances of chlorinated polyvinyl chloride (CPVC) ultrafiltration membranes by styrene-maleic anhydride copolymer

Chen, Guijing; Yang, Yuanyuan; Kang, Dongdong; Qin, Qingqing; Jin, Jinbo; Shao, Huiju; Qin, Shuhao

doi:10.1016/j.seppur.2020.118043

Cited by 20 publications

(13 citation statements)

References 50 publications

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“…In Figure 2a, as the CBT gradually increases from 0 to 50°C, the pore size of membrane surface gradually increases and the distribution becomes wider (see in Figure 3, from 17.27 to 48.72 nm). When the CBT was 0°C, there are co‐continuous pores on the membrane surface, which was similar to the pore morphology of pure CPVC membrane reported previously 18,36 . This is due to the low interdiffusion rate between water and DMAc at low temperature, which also leads to the delay of liquid–liquid separation at the top of the casting solution.…”

Section: Resultssupporting

confidence: 86%

“…The characteristic peak at 700 cm −1 belongs to the characteristic peak of CH flexural vibration on benzene ring. In summary, the FTIR spectrum results suggests that higher CBT did not destroy the anhydride structure, while the strong chain entanglement and hydrogen bond between SMA and CPVC prevent SMA segment from migrating to non‐solvent water during rapid phase separation 15,36 …”

Section: Resultsmentioning

confidence: 88%

“…SMA/CPVC composite membranes were fabricated using NIPS technology 39 . The mass ratio of CPVC, SMA, and DMAc in casting solution was 20:2:78, and the detailed preparation process has been reported in our previous article 36 . The CBT was controlled at 0, 10, 20, 30, 40, and 50°C, respectively, to obtained SMA/CPVC composite membranes with different microstructures.…”

Section: Methodsmentioning

confidence: 99%

“…The steady water permeance flux (J w ), the BSA solution flux (J r ), and the flux of recovery water from membrane after water cleaning (J p ) were obtained at 0.1 MPa, respectively. The detailed process of membranes fouling was the same as in our previous report 36 . Then, flux recovery ratio (FRR), reversible flux decline ratio (DR r ), total flux decline ratio (DR t ), and irreversible flux decline ratio (DR ir ) were calculated using the following Equation (), Equation (), Equation (), Equation () to assess the anti‐fouling performance of the membrane: 42

italicFRR goodbreak= \frac{J_{r}}{J_{w}} goodbreak\times 100 %

D R_{r} goodbreak= \frac{J_{r} - J_{P}}{J_{w}} goodbreak\times 100 %

{DR}_{t} goodbreak= \frac{J_{w} - J_{p}}{J_{w}} goodbreak\times 100 %

{DR}_{ir} goodbreak= \frac{J_{w} - J_{r}}{J_{w}} goodbreak\times 100 %

…”

Section: Methodsmentioning

confidence: 99%

“…However, there are few reports on its effects on the microstructure and properties of membranes containing additives or cellular foaming agents with cyclic hydrophilic groups. We previously reported that the content of styrene‐maleic anhydride copolymer (SMA) containing cyclic hydrophilic groups affected the microstructure and separation performance of UF membrane and can act as pore‐foaming agent 36,37 . Considering that CBT is also crucial to the evolution of membrane morphology during the phase inversion process 38 .…”

Section: Introductionmentioning

confidence: 99%

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Tuning the microstructure of SMA/CPVC membrane for enhanced separation performance by adjusting the coagulation bath temperature

Chen

Luo

et al. 2022

J of Applied Polymer Sci

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In this study, styrene‐maleic anhydride copolymer/chlorinated polyvinyl chloride composite membranes were prepared via a non‐solvent induced phase separation technique. Different porous morphologies of the composite membranes were obtained by controlling the temperature of coagulation bath water. With the coagulation bath temperature increasing, the porous morphology of membrane surface changed from co‐continuous pores to isolated‐round‐pores, and its evolution mechanism was elaborated. The average pore size of membranes surface increased from 17.27 to 48.72 nm, the pure water flux increased from 225.50 to 624.47 L m−2 h−1, and the rejection rate of Congo red and bovine serum albumin declined gradually with the increase of coagulation bath temperature, but the NaCl rejection was less than 1.0%. The surface segregation behavior of anhydride groups was affected by the phase separation process, which in turn affects the anti‐fouling performance of membranes. The composite membranes obtained at the coagulation bath temperature of 20 and 30°C had large surface segregation of anhydride groups and excellent anti‐fouling performance. The water flux recovery rate is higher than 90% and the irreversible pollution decline rate is about 5.0%. Meanwhile, the obtained membranes, especially the membrane fabricated at a coagulation bath temperature of 0°C, has good dye/NaCl salt separation performance and can be used for the pretreatment of textile wastewater.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

italicFRR goodbreak= \frac{J_{r}}{J_{w}} goodbreak\times 100 %

D R_{r} goodbreak= \frac{J_{r} - J_{P}}{J_{w}} goodbreak\times 100 %

{DR}_{t} goodbreak= \frac{J_{w} - J_{p}}{J_{w}} goodbreak\times 100 %

{DR}_{ir} goodbreak= \frac{J_{w} - J_{r}}{J_{w}} goodbreak\times 100 %

…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tuning the microstructure of SMA/CPVC membrane for enhanced separation performance by adjusting the coagulation bath temperature

Chen

Luo

et al. 2022

J of Applied Polymer Sci

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Designed loose nanofiltration membrane for efficient separation of low molecular dye/salt

Jin

Yang

et al. 2022

J of Applied Polymer Sci

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Efficient selective separation of low molecular weight dye/salt system is of great significance for promoting the development of membrane technology in the field of wastewater treatment. In this study, a loose nanofiltration membrane (LNF) was fabricated for the desalination of dye wastewater through a facile method. Firstly, styrene‐co‐maleic anhydride (SMA) containing anhydride group was added to PES membrane by blending, then polyethylene imide (PEI) was grafted onto the membrane surface by the reaction between amino group and anhydride group. Finally, the unreacted NH2 on the membrane surface were used for secondary cross‐linking with glutaraldehyde (GA) and ethylene glycol diglycidyl ether (EGDE) to obtain GA‐NF and EGDE‐NF membranes. Results showed that nanofiltration membranes with narrow pore size distribution and uniform structure are obtained. Compared with the aldehyde group in GA, the epoxy group in EGDE monomer has higher reactivity and hydrophilicity, which reacts with the amine group of PEI molecule to form hydrophilic hydroxyl group. Therefore, the water flux of EGDE‐NF membrane was about 20% higher than that of GA‐NF membrane, and the rejection of CR, AF, and EBT dyes was increased to more than 99%. Through chemical treatment of acid and alkali, both GA‐NF and EGDE‐NF membranes showed excellent separation performance stability.

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Improved hydrophilicity and antifouling performances of PVDF ultrafiltration membrane via in situ cross-linking

Ren,

Deng,

Yang

et al. 2023

J Mater Sci

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Enhanced performances of chlorinated polyvinyl chloride (CPVC) ultrafiltration membranes by styrene-maleic anhydride copolymer

Cited by 20 publications

References 50 publications

Tuning the microstructure of SMA/CPVC membrane for enhanced separation performance by adjusting the coagulation bath temperature

Tuning the microstructure of SMA/CPVC membrane for enhanced separation performance by adjusting the coagulation bath temperature

Designed loose nanofiltration membrane for efficient separation of low molecular dye/salt

Improved hydrophilicity and antifouling performances of PVDF ultrafiltration membrane via in situ cross-linking

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