Surface modification of calcium carbonate: A review of theories, methods and applications

Li, Chunquan; Liang, Chao; Chen, Zhen-ming; Di, Yong-hao; Zheng, Shuilin; Shi, Wei; Sun, Zhiming

doi:10.1007/s11771-021-4795-6

Cited by 31 publications

(14 citation statements)

References 113 publications

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“…In Figure b, DNF-0, DNF-5, and ANF-5 membranes all displayed negative zeta potential. DNF-5 membrane had a lower zeta potential because there existed CaCO 3 that easily adsorbed hydroxyl groups in water . After acid treatment of the DNF-5 membrane, the obtained ANF-5 membrane had a higher zeta potential in the pH range of 6–10 compared with DNF-0 and DNF-5 membrane possibly due to the adsorption of trace Ca 2+ on the membrane surface .…”

Section: Results and Discussionmentioning

confidence: 96%

Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Liu

et al. 2022

ACS Appl. Nano Mater.

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Nanofiltration (NF) membranes commonly with a single polyamide (PA) barrier layer play a significant role in the fields of separation and purification. Herein, an NF membrane with double PA layers was successfully fabricated through interfacial polymerization (IP) of a diamine with trimesoyl chloride, and CaCO3 nanoparticles were used as scaffolds. The upper PA layer grounded on the nano-CaCO3 aggregates was incomplete with multidefects. Trimesoyl chloride solution could permeate through the multidefect PA layer to continue IP reaction with diamine underneath the multidefect PA layer to form a bottom defect-free PA layer. The double PA layers almost fitted together, and additional nanovoids were left after removing nano-CaCO3 particles by HCl. The NF membranes with double PA layers exhibited a high water permeance of 34.1 L·m–2·h–1·bar–1, 3.4-fold that of the control sample without sacrificing selectivity. This was attributed to the enhancement of the hydrophilicity and effective filtration area and decrease in PA layer thickness, as well as additional nanovoids to reduce transport resistance. The antifouling performance of the NF membrane was found to be superior to that of the control sample possibly because the upper thin PA layer as a protective layer reduced the contamination to the separation layer.

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Section: Results and Discussionmentioning

confidence: 96%

Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Liu

et al. 2022

ACS Appl. Nano Mater.

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“…Inorganic fillers with abundant sources and low prices are frequently used for the co-blending modification of PBAT ( Mondal et al, 2014 ; Mukhopadhyay et al, 2015 ; Li et al, 2018 ; Xing et al, 2019 ), with CaCO 3 being one of the most commonly used fillers in the polymer industry ( Kemal et al, 2013 ; Mantia et al, 2013 ; Tang et al, 2014 ; Zapata et al, 2018 ); however, CaCO 3 is a hydrophilic inorganic filler with poor interfacial bonding ability with the hydrophobic PBAT matrix, necessitating chemical functionalization treatment to modify its surface properties ( Chen et al, 2004 ). Fatty acid salt modification ( Wang et al, 2007 ; Jeong et al, 2009 ; Tran et al, 2010 ), phosphate ester modification ( Sheng et al, 2004 ), coupling agent modification ( Doufnoune et al, 2003 ; Li et al, 2019 ), surface polymer grafting modification ( Han and Kim, 2012 ), and in situ polymerization ( Li et al, 2021 ) are the most common chemical modification methods for inorganic fillers. Among these, coupling agent modification has the advantages of simplicity and low cost.…”

Section: Introductionmentioning

confidence: 99%

Gas-solid fluidization modification of calcium carbonate for high-performance poly (butylene adipate-co-terephthalate) (PBAT) composites

Shang

Li²,

Song³

et al. 2023

Front. Chem.

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Modifying biodegradable poly (butylene adipate-co-terephthalate) (PBAT) plastic with inorganic fillers is critical for improving its overall performance, lowering the costs, and expanding its application scope. The chemical modification method for the inorganic filler determines the application performance of PBAT composites. In this work, gas—solid fluidization method was developed as a simple, efficient, and scalable strategy for chemically modifying CaCO3 filler. The modified CaCO3 filler was mixed with PBAT and melt extruded to prepare biodegradable PBAT/CaCO3 composites. The characterization results show that gas—solid fluidization method combines the traditional wet modification method’s excellent modification effect with the scalability of the traditional dry modification method. The effects of modification methods and amount of CaCO3 filling on the crystallinity, mechanical, and rheological properties of PBAT/CaCO3 composites were compared. The results demonstrated that PBAT/CaCO3 composites containing 30% gas—solid fluidization modified CaCO3 could still maintain excellent overall performance. As a result, this work provides a simple, efficient, and scalable method for chemically modifying inorganic fillers and preparing biodegradable composites.

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“…The dispersion of the fillers can be improved via surface modification of the inorganic particles by increasing the surface tension and roughness of the particles or changing their surface chemical properties to improve the adhesion between the particles and the matrix [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. For example, Yang et al [ 21 ] modified nanostructured calcium carbonate (nano-CaCO 3 ) with γ-(2,3-epoxypropyloxy)propyltrimethoxysilane (KH560), 3-(methacryloxy)propyltrimethoxysilane (KH570), or isopropyl dioleoyloxy(dioctyl phosphate acyloxy) titanate.…”

Section: Introductionmentioning

confidence: 99%

PMMA-Grafted Calcium Sulfate Whiskers for Applications as Fillers in PVC

Líu

Nie

et al. 2022

Polymers

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Calcium sulfate whiskers (CSWs) were hydroxylated with a sodium hydroxide (NaOH) solution and isolated for subsequent treatment with an ethanolic 3-(methacryloxy)propyltrimethoxysilane (KH570) solution to introduce C=C double bonds on the CSWs’ surfaces. Then, CSW-g-PMMA was prepared by grafting polymethyl methacrylate (PMMA) onto the surface of modified CSW using in situ dispersion polymerization. The CSW-g-PMMA was used as a filler and melt-blended with polyvinyl chloride (PVC) to prepare PVC-based composites. The surface chemical structure, PMMA grafting rate, and hydrophobic properties of CSW-g-PMMA were analyzed using X-ray diffraction, diffuse reflectance Fourier-transform infrared spectroscopy, thermogravimetric analysis, and water contact angle measurements, respectively. The effects of the CSW-g-PMMA filler on the mechanical properties of the CSW-PMMA/PVC composites were also investigated. The results showed that NaOH treatment significantly increased the number of hydroxyl groups on the surface of the CSWs, which facilitated the introduction of KH570. PMMA was successfully grafted onto the KH570 with a grafting rate of 14.48% onto the surface of the CSWs. The CSW-g-PMMA had good interfacial compatibility and adhesion properties with the PVC matrix. The tensile, flexural, and impact strengths of the CSW-g-PMMA/PVC composite reached 39.28 MPa, 45.69 MPa, and 7.05 kJ/m2, respectively, which were 38.55%, 30.99%, and 20.10% higher than those of the CSW/PVC composite and 54.52%, 40.80%, and 32.52% higher than those of pure PVC, respectively. This work provides a new method for surface modification of inorganic fillers, resource utilization, and high value-added application of CSWs from phosphogypsum.

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Surface modification of calcium carbonate: A review of theories, methods and applications

Cited by 31 publications

References 113 publications

Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Gas-solid fluidization modification of calcium carbonate for high-performance poly (butylene adipate-co-terephthalate) (PBAT) composites

PMMA-Grafted Calcium Sulfate Whiskers for Applications as Fillers in PVC

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Surface modification of calcium carbonate: A review of theories, methods and applications

Cited by 31 publications

References 113 publications

Double Polyamide Layers with CaCO3 Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Double Polyamide Layers with CaCO3 Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Gas-solid fluidization modification of calcium carbonate for high-performance poly (butylene adipate-co-terephthalate) (PBAT) composites

PMMA-Grafted Calcium Sulfate Whiskers for Applications as Fillers in PVC

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Product

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Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes

Double Polyamide Layers with CaCO₃ Nanoparticles as Scaffolds for High Performance Nanofiltration Membranes