Pub Date : 2018-08-02DOI: 10.19080/ajop.2018.01.555566
Shouren Wang
{"title":"The Making Process of Go/CT/PTFE Flat Sliding Plate of High-Speed Railway Bridge Spherical Bearings","authors":"Shouren Wang","doi":"10.19080/ajop.2018.01.555566","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555566","url":null,"abstract":"","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74777047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.19080/AJOP.2018.01.555565
M. Gryta
Membrane distillation (MD) is an evaporation process of water through non-wetted porous membranes. In this process the salts and other non-volatile compounds present in the feed water are retained and the quality of produced distillate is close to distilled water [1-4]. The results of studies presented in the literature indicate that the MD process is not only an effective method for water desalination [1-3, 5], but also can be applied for wastewater treatment, especially when the salts concentration is high [3,6,7].
{"title":"The Application of Polypropylene Membranes for Membrane Distillation","authors":"M. Gryta","doi":"10.19080/AJOP.2018.01.555565","DOIUrl":"https://doi.org/10.19080/AJOP.2018.01.555565","url":null,"abstract":"Membrane distillation (MD) is an evaporation process of water through non-wetted porous membranes. In this process the salts and other non-volatile compounds present in the feed water are retained and the quality of produced distillate is close to distilled water [1-4]. The results of studies presented in the literature indicate that the MD process is not only an effective method for water desalination [1-3, 5], but also can be applied for wastewater treatment, especially when the salts concentration is high [3,6,7].","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76694071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-31DOI: 10.19080/ajop.2018.01.555564
Ahmed Esmail Shalan
{"title":"Advanced Polymeric Materials for Electronic and Energy Applications","authors":"Ahmed Esmail Shalan","doi":"10.19080/ajop.2018.01.555564","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555564","url":null,"abstract":"","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80322981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-20DOI: 10.19080/ajop.2018.01.555563
Hiroshi Ito
In the present work, we tried to toughen polyamide 6 (PA6) by blending a small amount of low molecular-weight polyethylene (LMWPE). We obtained the PA6/LMWPE blends with different morphologies using multiple melt-kneading methods such as the uniaxial melt-kneading, the eight-axial screw melt-kneading, and the high shearing method. As a result, it was elucidated that the LMWPE was homogeneously and finely dispersed by using the eight-axial melt-kneading method. On the other hand, we found that for high shearing method the LMWPE was finely dispersed to a degree close to the compatible system. The result of the three-point bending test showed that the PA6 was brittle fractured, but it changed to ductile fracture when a small amount of LMWPE was blended. Also, the fracture displacement was extensively improved. The results of the comparison by the melt-kneading methods revealed that the toughness of the PA6 was improved even by adding a small amount of LMWPE (about 2%) when they were blended using the eight-axial screw melt-kneading machine. The cross-sectional observation in the bending test showed that voids were produced from the LMWPE. We elucidated that the production of voids was induced with low stress by adding fragile LMWPE, resulting in the improvement of the bending toughness. Moreover, we found that the LMWPE needs to be finely dispersed with an appropriate particle size in order to exhibit ductile properties.
{"title":"Comparative Study on Polyamide 6 Toughness using Multiple Melt-Kneading Techniques","authors":"Hiroshi Ito","doi":"10.19080/ajop.2018.01.555563","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555563","url":null,"abstract":"In the present work, we tried to toughen polyamide 6 (PA6) by blending a small amount of low molecular-weight polyethylene (LMWPE). We obtained the PA6/LMWPE blends with different morphologies using multiple melt-kneading methods such as the uniaxial melt-kneading, the eight-axial screw melt-kneading, and the high shearing method. As a result, it was elucidated that the LMWPE was homogeneously and finely dispersed by using the eight-axial melt-kneading method. On the other hand, we found that for high shearing method the LMWPE was finely dispersed to a degree close to the compatible system. The result of the three-point bending test showed that the PA6 was brittle fractured, but it changed to ductile fracture when a small amount of LMWPE was blended. Also, the fracture displacement was extensively improved. The results of the comparison by the melt-kneading methods revealed that the toughness of the PA6 was improved even by adding a small amount of LMWPE (about 2%) when they were blended using the eight-axial screw melt-kneading machine. The cross-sectional observation in the bending test showed that voids were produced from the LMWPE. We elucidated that the production of voids was induced with low stress by adding fragile LMWPE, resulting in the improvement of the bending toughness. Moreover, we found that the LMWPE needs to be finely dispersed with an appropriate particle size in order to exhibit ductile properties.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75929225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-17DOI: 10.19080/ajop.2018.01.555562
Kurbanbekov ShR
{"title":"Research of Hydrogen Absorption-Desorption by Ti-Al-Nb Alloy","authors":"Kurbanbekov ShR","doi":"10.19080/ajop.2018.01.555562","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555562","url":null,"abstract":"","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89566191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-17DOI: 10.19080/AJOP.2018.01.555561
Nisha Bagotia
The broad developments of electronic systems and telecommunications has led to a novel type of pollution i.e. electromagnetic interference (EMI). EMI has appeared as a major problem, which not only affecting the proper working of electronic devices but as well as causing harmful effects to the health of human beings [1,2]. Generally, mobile phone, radar, radio transceivers, microwave oven, and various electronic devices are the main causes of EMI [3,4]. The long time exposure of EM waves have also been recognized as strong cancer-causing agent [5]. Therefore, appropriate shield is required to reduce the effect of EM waves. Generally, electrically conductive or magnetic filler are used as a EMI shielding material, because these materials have capability to interact with coupled electric and magnetic fields of the incident EM waves [6,7]. Metals and metal loaded composites have been widely used as EMI shielding materials, but these materials have disadvantages such as high density, corrosion prone, inconvenient processing etc. which limits their practical applicability. As compare to the metals, carbon nanomaterials have appeared as promising alternative conductive filler for production of EMI shield [6,8,9]. Nowadays, the use of carbon nanotubes (CNTs), having ultra-high modulus and strength, good thermal and electrical properties, as filler in polymer nanocomposites prepare material with lower filler loadings having improved electrical and EMI shielding properties [10-15]. As reported in literature, mechanical strength, electrical conductivity or thermal properties and EMI shielding effectiveness of the polymer nanocomposites are affected by different factors such as the aspect ratio, dispersion, processing methods, treatment methods, and loading of CNTs [16]. Li et al. [15] studied the conductivity and EMI SE of epoxy/ SWCNT nanocomposites filled with SWCNTs having different aspect ratios. The maximum EMI shielding effectiveness has been reported for epoxy/SWCNT composites having 15wt% SWCNTslong (SE ∼49dB and 15-20dB obtained at 10MHz and in the 500MHz to 1.5GHz range respectively). In another study, Gupta et al. [17] reported EMI shielding properties (in Ku-band) of poly (trimethylene terephthalate) (PTT)/MWCNT nanocomposites. Electrical percolation of composites has been reported at 1wt% loading of MWCNT and SE of 36-42dB reported at 10wt% loading of MWCNT. Bai et al. [18] described the effect of nanotube aspect ratio on the electrical properties and mechanical strength of the
{"title":"A Comparative Study of Multiwalled Carbon Nanotube Based Polystyrene and Toughened Polycarbonate Nanocomposites","authors":"Nisha Bagotia","doi":"10.19080/AJOP.2018.01.555561","DOIUrl":"https://doi.org/10.19080/AJOP.2018.01.555561","url":null,"abstract":"The broad developments of electronic systems and telecommunications has led to a novel type of pollution i.e. electromagnetic interference (EMI). EMI has appeared as a major problem, which not only affecting the proper working of electronic devices but as well as causing harmful effects to the health of human beings [1,2]. Generally, mobile phone, radar, radio transceivers, microwave oven, and various electronic devices are the main causes of EMI [3,4]. The long time exposure of EM waves have also been recognized as strong cancer-causing agent [5]. Therefore, appropriate shield is required to reduce the effect of EM waves. Generally, electrically conductive or magnetic filler are used as a EMI shielding material, because these materials have capability to interact with coupled electric and magnetic fields of the incident EM waves [6,7]. Metals and metal loaded composites have been widely used as EMI shielding materials, but these materials have disadvantages such as high density, corrosion prone, inconvenient processing etc. which limits their practical applicability. As compare to the metals, carbon nanomaterials have appeared as promising alternative conductive filler for production of EMI shield [6,8,9]. Nowadays, the use of carbon nanotubes (CNTs), having ultra-high modulus and strength, good thermal and electrical properties, as filler in polymer nanocomposites prepare material with lower filler loadings having improved electrical and EMI shielding properties [10-15]. As reported in literature, mechanical strength, electrical conductivity or thermal properties and EMI shielding effectiveness of the polymer nanocomposites are affected by different factors such as the aspect ratio, dispersion, processing methods, treatment methods, and loading of CNTs [16]. Li et al. [15] studied the conductivity and EMI SE of epoxy/ SWCNT nanocomposites filled with SWCNTs having different aspect ratios. The maximum EMI shielding effectiveness has been reported for epoxy/SWCNT composites having 15wt% SWCNTslong (SE ∼49dB and 15-20dB obtained at 10MHz and in the 500MHz to 1.5GHz range respectively). In another study, Gupta et al. [17] reported EMI shielding properties (in Ku-band) of poly (trimethylene terephthalate) (PTT)/MWCNT nanocomposites. Electrical percolation of composites has been reported at 1wt% loading of MWCNT and SE of 36-42dB reported at 10wt% loading of MWCNT. Bai et al. [18] described the effect of nanotube aspect ratio on the electrical properties and mechanical strength of the","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89306666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-10DOI: 10.19080/ajop.2018.01.555559
Ahmad AdlieShamsuri
The development of the polymer composites industry has been very encouraging in the past years. The polymer blends have also been received considerable attention, this is due to the blends are easy to prepare, their production cost is low, and so on. At the present time, bioplastics such as polylactic acid, polyhydroxybutyrate and polybutylene succinate are gaining consideration due to their excellent biodegradability, biocompatibility and non-toxicity. Blend between bioplastics and biopolymers (for example; cellulose, zein and starch) to produce bioplastic/biopolymer blends have attracted the researchers’ interest. Besides, the produced bioplastic/biopolymer blends may also be able to be used in fabrication of biocompatible and biodegradable products. Moreover, the utilization of expensive synthetic bioplastics can be reduced through consumption of biopolymers this can further lower the cost of products [1,2].
{"title":"Compatibilization Potential of Ionic Liquid-Based Surfactants for Polymer Blends","authors":"Ahmad AdlieShamsuri","doi":"10.19080/ajop.2018.01.555559","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555559","url":null,"abstract":"The development of the polymer composites industry has been very encouraging in the past years. The polymer blends have also been received considerable attention, this is due to the blends are easy to prepare, their production cost is low, and so on. At the present time, bioplastics such as polylactic acid, polyhydroxybutyrate and polybutylene succinate are gaining consideration due to their excellent biodegradability, biocompatibility and non-toxicity. Blend between bioplastics and biopolymers (for example; cellulose, zein and starch) to produce bioplastic/biopolymer blends have attracted the researchers’ interest. Besides, the produced bioplastic/biopolymer blends may also be able to be used in fabrication of biocompatible and biodegradable products. Moreover, the utilization of expensive synthetic bioplastics can be reduced through consumption of biopolymers this can further lower the cost of products [1,2].","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87335611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-05DOI: 10.19080/ajop.2018.01.555558
Eun Ho Lee
{"title":"A Review on Plastic Behavior of Polymer Sheets and Forming Process","authors":"Eun Ho Lee","doi":"10.19080/ajop.2018.01.555558","DOIUrl":"https://doi.org/10.19080/ajop.2018.01.555558","url":null,"abstract":"","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81868376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-02DOI: 10.19080/AJOP.2018.01.555557
F. Nanni
The development of Smart materials, composite systems capable of altering their properties when subjected to external stimuli, has brought about a revolution in materials science and in modern society as a whole. In fact, smart materials can be designed basing on the requirements of a particular application and the response can be tailored up to the customer’s needs, thus allowing engineers to develop materials with many different functions embedded.
{"title":"A Novel Empirical Approach to Estimate the Acoustic Properties of Smart Materials: Part I","authors":"F. Nanni","doi":"10.19080/AJOP.2018.01.555557","DOIUrl":"https://doi.org/10.19080/AJOP.2018.01.555557","url":null,"abstract":"The development of Smart materials, composite systems capable of altering their properties when subjected to external stimuli, has brought about a revolution in materials science and in modern society as a whole. In fact, smart materials can be designed basing on the requirements of a particular application and the response can be tailored up to the customer’s needs, thus allowing engineers to develop materials with many different functions embedded.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91345274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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