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Fluorescence Quenching of Raman Spectra by Carbon Materials 碳材料拉曼光谱的荧光猝灭
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.603
Miku Maeyama, K. Abiko, Yuichi Kato, E. Sudo
{"title":"Fluorescence Quenching of Raman Spectra by Carbon Materials","authors":"Miku Maeyama, K. Abiko, Yuichi Kato, E. Sudo","doi":"10.2116/bunsekikagaku.71.603","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.603","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42860048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly Accurate Determination of the Delay Volume between the MALS and Differential Refractometer in SEC SEC中MALS与差示折射仪延时体积的高精度测定
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.579
Y. Matsumoto, Kayo Ueda, Sho Kasuga, Kazushi Enomoto, M. Kikuchi, A. Narumi, S. Kawaguchi
{"title":"Highly Accurate Determination of the Delay Volume between the MALS and Differential Refractometer in SEC","authors":"Y. Matsumoto, Kayo Ueda, Sho Kasuga, Kazushi Enomoto, M. Kikuchi, A. Narumi, S. Kawaguchi","doi":"10.2116/bunsekikagaku.71.579","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.579","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45022411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of Styrene/n-Butyl Acrylate Copolymer by Electrospray Ionization-Ion Mobility Spectrometry-Mass Spectrometry 苯乙烯/丙烯酸正丁酯共聚物的电喷雾电离-离子迁移谱-质谱表征
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.563
Yuka Ozeki, S. Kitagawa, H. Ohtani, Yosuke Kondo, H. Shinada
{"title":"Characterization of Styrene/n-Butyl Acrylate Copolymer by Electrospray Ionization-Ion Mobility Spectrometry-Mass Spectrometry","authors":"Yuka Ozeki, S. Kitagawa, H. Ohtani, Yosuke Kondo, H. Shinada","doi":"10.2116/bunsekikagaku.71.563","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.563","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45779200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation Method for Microplastics Deterioration Degree Using UV-Irradiated Polyethylene Model Sample 用紫外辐照聚乙烯模型样品评价微塑料变质程度的方法
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.589
Kumiko Ikuta, Kazuya Takao, Y. Matsumoto, Satoru Yukioka, Hiroki Kataoka, Shuhei Tanaka
{"title":"Evaluation Method for Microplastics Deterioration Degree Using UV-Irradiated Polyethylene Model Sample","authors":"Kumiko Ikuta, Kazuya Takao, Y. Matsumoto, Satoru Yukioka, Hiroki Kataoka, Shuhei Tanaka","doi":"10.2116/bunsekikagaku.71.589","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.589","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42139765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Pyrolysis-Gas Chromatography for the Development of Chemical Recycling Process for Plastics 热解气相色谱法在塑料化学回收工艺开发中的应用
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.549
S. Kumagai, T. Yoshioka
{"title":"Application of Pyrolysis-Gas Chromatography for the Development of Chemical Recycling Process for Plastics","authors":"S. Kumagai, T. Yoshioka","doi":"10.2116/bunsekikagaku.71.549","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.549","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46923393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Off-flavor Analysis of Degraded Natural Rubber by Solid-Phase Microextraction - Gas Chromatography/Mass Spectrometry 固相微萃取-气相色谱/质谱法分析降解天然橡胶的异味
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-10-05 DOI: 10.2116/bunsekikagaku.71.595
Satoshi Kagami, A. Hosaka, Sadao Nakamura
{"title":"Off-flavor Analysis of Degraded Natural Rubber by Solid-Phase Microextraction - Gas Chromatography/Mass Spectrometry","authors":"Satoshi Kagami, A. Hosaka, Sadao Nakamura","doi":"10.2116/bunsekikagaku.71.595","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.595","url":null,"abstract":"","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44069504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular Mobility and Higher-Order Structural Analysis of Polyoxymethylene under Heating and Fuel Swelling 加热和燃料膨胀下聚氧亚甲基分子迁移率及高阶结构分析
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-09-05 DOI: 10.2116/bunsekikagaku.71.511
Tatsuhiko Nagao, A. Yagi, Yuhki Kanda, Kuniaki Kawaguchi
{"title":"Molecular Mobility and Higher-Order Structural Analysis of Polyoxymethylene under Heating and Fuel Swelling","authors":"Tatsuhiko Nagao, A. Yagi, Yuhki Kanda, Kuniaki Kawaguchi","doi":"10.2116/bunsekikagaku.71.511","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.511","url":null,"abstract":"and fuel swelling on the molecular mobility and higher-order structure of POM. In this study, the molecular mobility and higher-order structural changes of POM under heating and fuel swelling were analyzed using solid-state NMR, wide-angle X-ray diffraction (WAXD), and small-angle X-ray scattering (SAXS). Solid-state NMR measurements showed that the molecular mobility of all regions including crystalline to amorphous phases was enhanced under heating, while selective enhancement of molecular mobility was observed only in the amorphous and intermediate phases under fuel swelling. The results of solid-state NMR, WAXD, and SAXS measurements also confirmed that higher-order structural changes, such as increased crystallinity and increased volume of amorphous portions which occurred simultaneously due to fuel swelling.","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44991756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Qualitative Analysis of Maleic Anhydride Copolymer by Pyrolysis GC/MS-combined with Imide Derivatization 热解GC/ ms -亚胺衍生法定性分析马来酸酐共聚物
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-09-05 DOI: 10.2116/bunsekikagaku.71.517
Kei Ishitsuka, Toshifumi Kakiuchi
{"title":"Qualitative Analysis of Maleic Anhydride Copolymer by Pyrolysis GC/MS-combined with Imide Derivatization","authors":"Kei Ishitsuka, Toshifumi Kakiuchi","doi":"10.2116/bunsekikagaku.71.517","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.517","url":null,"abstract":"derivatization-pyrolysis GC/MS will enable discriminant analysis of acid anhydride polymers.","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44998242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of Chemical Heterogeneity of Cellulose Esters by Gradient Elution HPLC 梯度洗脱高效液相色谱法表征纤维素酯的化学异构性
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-09-05 DOI: 10.2116/bunsekikagaku.71.495
Tadatomo Kawai, Shizuka Ukita, S. Shimamoto
{"title":"Characterization of Chemical Heterogeneity of Cellulose Esters by Gradient Elution HPLC","authors":"Tadatomo Kawai, Shizuka Ukita, S. Shimamoto","doi":"10.2116/bunsekikagaku.71.495","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.495","url":null,"abstract":"A gradient polymer elution chromatography (GPEC) method was developed that can separate cellulose acetate (CA) with respect to a wide range of degrees of substitution (DS). A series of cellulose acetate propionate and cellulose acetate benzoate samples were synthesized by propionylation or benzoylation of CA samples with average degrees of substitution ranging from 0.6 to 2.9, and compositionally separated using the GPEC method. The reversed-phase gradient separation based on an adsorption/desorption mechanism, a linear gradient of acetonitrile : H 2 O = 6 : 1 and ethyl acetate was used with a phenyl group-modified silica column as stationary phase. Separation of samples with different DS values was achieved for both sample series. A slight molar mass effect was observed during elution for the sample with low DS. In addition, a sharp peak at low retention time was observed for the high DS sample. Although a search for further separation systems is necessary for the determination of quantitative substitution degree distribution, this method is applicable to the determination of DS distribution over a wide DS range.","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48921115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation between Molecular Weight and Chemical Composition of Poly(styrene-co-acrylate) Synthesized by RAFT Copolymerization RAFT共聚合成的聚苯乙烯-丙烯酸酯分子量与化学组成的关系
IF 0.2 4区 化学
Bunseki Kagaku Pub Date : 2022-09-05 DOI: 10.2116/bunsekikagaku.71.501
Tadatomo Kawai, Yuzo Itoh
{"title":"Correlation between Molecular Weight and Chemical Composition of Poly(styrene-co-acrylate) Synthesized by RAFT Copolymerization","authors":"Tadatomo Kawai, Yuzo Itoh","doi":"10.2116/bunsekikagaku.71.501","DOIUrl":"https://doi.org/10.2116/bunsekikagaku.71.501","url":null,"abstract":"Poly(styrene- co -methyl acrylate): SMA, poly(styrene- co -tert butyl acrylate): StBA and poly(styrene- co -methyl methacrylate): SMMA were synthesized by reversible addition-fragmentation chain transfer (RAFT) method. The relationship between the molecular weight and the styrene content was investigated by UV–RI dual detection size-exclusion chromatography. In the SMA and StBA of short polymerization time samples, the styrene content showed a tendency to decrease from the low molecular weight region toward the high molecular weight region. On the other hand, the styrene content tended to increase from the low molecular weight region toward the high molecular weight region in the long polymerization time copolymer samples. The SMMA samples showed no trend of similar changes as SMA and StBA. We have concluded that the phenomenon may be due to the difference in the chain length dependence of the equilibrium constants for the pre-equilibrium and main-equilibrium of the RAFT process.","PeriodicalId":9521,"journal":{"name":"Bunseki Kagaku","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42808779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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