Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes

Guzman, Manuel Reyes De; Liu, Po‐Yu; Chen, Jung-Tsai; Tung, Kuo‐Lun; Lee, Kueir‐Rarn; Lai, Juin‐Yih

doi:10.1016/j.memsci.2011.05.035

Cited by 14 publications

(2 citation statements)

References 43 publications

(131 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the above-mentioned methods, blending with other ductile polymers is regarded as a more efficient and practical way. For binary blends, microstructures have a strong influence on mechanical properties. − Depending on the processing conditions, the microstructures of binary blends can be classified as sea–island, cocontinuous, and in situ fibrous structures. − Recently, in situ fibrous structure has shown great potential for improving the mechanical properties of polymer blends. − Fakirvo et al proposed the concept of microfibrillar composites and pointed out that the presence of poly(ethylene terephthalate) nanofibrils in polypropylene can improve the tensile strength and Young’s modulus by 30–35%. Park and co-workers , achieved in situ nanofibrillation of blends with different polymers as matrix via die extruding-hot stretching or cold drawing technique.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Microstructure of Biodegradable PLA/PBS Melt-Blown Nonwovens with Enhanced Mechanical Performance by In Situ PBS Fibrils Formation

Meng,

Chen,

Sun

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Polylactide (PLA) has attracted attention for use in the melt blowing process due to its ease of processing and biodegradation. However, the low mechanical property limits the practical application. In this work, in situ fibrillation technology was introduced to improve the mechanical properties of PLA-based melt-blown nonwovens. First, PLA/ PBS blends with a sea−island morphology were prepared using a screw extruder. Then, the PBS droplets evolved into in situ fibrils under the action of elongational flow and transverse contraction in the die and airflow field. Benefiting from the in situ fibrous structure, the simultaneous enhancement in strength (2.19 MPa) and strain (12.97%) was achieved in the PLA-based melt-blown nonwovens, obtaining a substantial increase of 164 and 672%, respectively, compared to the pure PLA nonwovens. Moreover, the prepared nonwovens exhibited enhanced thermal properties and good wearing comfort performance. Overall, this study proposes a simple and promising method for preparing biodegradable melt-blown nonwovens with excellent mechanical properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Tailoring the Microstructure of Biodegradable PLA/PBS Melt-Blown Nonwovens with Enhanced Mechanical Performance by In Situ PBS Fibrils Formation

Meng,

Chen,

Sun

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…(Utracki 1998;Shonaike and Simon 1999) Compatibilizers are usually required for promote the compatibilization of blends containing immiscible polymeric constituents the interfacial energy between their phases and leading the creation of a polymer alloys with enhanced their properties performance. The compatibilizers normally applied into the incompatible blends are random copolymer, diblock copolymer, triblock copolymer or graft copolymer(De Guzman et al 2011) show as Figure2.10.…”

mentioning

confidence: 99%

Preparation and properties of natural rubber grafted with poly (Butyl Acrylate-CO-Fluorinated Acrylate)

Yimmut

View full text Add to dashboard Cite

Graft copolymerization of 2,2,2–trifluoroethyl methacrylate (3FMA) onto natural rubber (NR) was synthesized in an emulsion system by using potassium persulfate (K2SO4) as an initiator. Since the polarity of NR and 3FMA monomer was different, the 3FMA monomer could not be directly grafted onto the NR structure. Thus, butyl acrylate (BA) was selected as a co-monomer to enhance the grafting efficiency (GE) of this system. The chemical structure of NR before and after graft copolymerization was detected by using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and nuclear magnetic resonance spectroscopy. The effects of initiator concentration, BA/3FMA wt ratio, reaction temperature and reaction time on monomer conversion, grafting properties and GE of the graft NR (GNR) were investigated. The maximum content of NR-g-poly(BA-co-3FMA) at 72.8 wt% was obtained by using 30/70 (w/w) BA/3FMA and 1.5 phr K2SO4 at 60 °C for 8 h. This condition provided GNR with 25.3 mol% grafted 3FMA content and 68.5% GE. The latex of the graft product exhibited the core-shell morphology. The thermal properties, mechanical properties, contact angle and surface energy were analyzed to evaluate the effect of the addition of graft product on the compatibility between NR and poly(BA-co-3FMA) phases in the NR/poly(BA-co-3FMA) films (20/80 (w/w)). The results revealed that the addition of 10 wt% GNR enhanced the compatibility of the polymeric constituents in the films resulting the improved hydrophobicity with high contact angle (109°) and higher toughness. Moreover, the oil swelling resistance of obtained film was higher than that of the commercial self-sealing film using in the laboratory, Parafilm MR.

show abstract

Pervaporation

Pangarkar

Ray²

2020

Kirk-Othmer Encyclopedia of Chemical Technology

View full text Add to dashboard Cite

Pervaporation is a process that employs dense membrane to separates liquid mixtures. Various types of membranes: polymeric, ceramic, or composite can be used. In recent years there has been significant academic as well as industrial advancement in this attractive membrane process. Novel types of membranes have been reported. These include nanocomposite including nano‐sized metal, metal oxide, and graphene/graphene oxide incorporated ceramic/polymer membranes, polyamine‐based thin film composite membranes (earlier commercialized for reverse osmosis membranes), copolymer/interpenetrating network types membranes, template type membranes, polyelectrolyte complex, gold and silver nanoparticle‐based membranes for plasmon PV, and so on. In the application area, besides the well‐known alcohol dehydration PV has been investigated for recovery of aroma and flavor in the food and beverage industries, desulfurization of gasoline, intensification of chemical reactions, and so on. Further, PV is being extensively used as a low‐temperature environment friendly “green technology” for safe removal of volatile organic compounds using highly selective organophilic membranes. The advent of metal–organic framework membranes has resulted in significantly higher selectivities as compared to conventional membranes. PV is also being investigated for desalination with hydrophilic membranes. This article provides a state of the art discussion on PV that includes basic principles, types of membranes/modules, and important industrial applications.

show abstract

Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes

Cited by 14 publications

References 43 publications

Tailoring the Microstructure of Biodegradable PLA/PBS Melt-Blown Nonwovens with Enhanced Mechanical Performance by In Situ PBS Fibrils Formation

Tailoring the Microstructure of Biodegradable PLA/PBS Melt-Blown Nonwovens with Enhanced Mechanical Performance by In Situ PBS Fibrils Formation

Preparation and properties of natural rubber grafted with poly (Butyl Acrylate-CO-Fluorinated Acrylate)

Pervaporation

Contact Info

Product

Resources

About