Applied Spectroscopy最新文献_第9页

Characterization of Additives in Polyvinyl Chloride Using Infrared Spectroscopy and Evolved Gas Analysis-Mass Spectrometry Coupled with Two-Dimensional Correlation Spectroscopy. EXPRESS：利用红外光谱和逸出气分析-质谱联用二维相关光谱技术表征聚氯乙烯中的添加剂。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-11-12 DOI: 10.1177/00037028251398865

Shogo Yamane, Yasumasa Suzuki, Hideyuki Shinzawa

{"title":"Characterization of Additives in Polyvinyl Chloride Using Infrared Spectroscopy and Evolved Gas Analysis-Mass Spectrometry Coupled with Two-Dimensional Correlation Spectroscopy.","authors":"Shogo Yamane, Yasumasa Suzuki, Hideyuki Shinzawa","doi":"10.1177/00037028251398865","DOIUrl":"10.1177/00037028251398865","url":null,"abstract":"Phthalate-based plasticizers in polyvinyl chloride (PVC) polymer were examined using infrared (IR) spectroscopy and evolved gas analysis-mass spectrometry (EGA-MS), a type of mass spectrometry (MS). IR signals arising from the C=O stretching vibrations of the plasticizers are observed but it is difficult to distinguish individual components due to their structural similarity. In contrast, temperature-dependent mass spectra of the PVC sample revealed a characteristic increase in total ion signals within the 100-220 °C range, indicating that plasticizer desorption occurs predominantly before decomposition of the PVC polymer. The application of two-dimensional correlation spectroscopy (2D-COS) to the mass spectra elucidated the detailed sequence of spectral changes during thermal desorption. The 2D correlation spectra derived from the mass spectra within the 100-220 °C range exhibited distinct correlation peaks associated with bis(2-ethylhexyl) phthalate, bis(2-ethylhexyl) adipate, and bis(2-ethylhexyl) sebacate. These results demonstrate that EGA-MS, combined with 2D-COS, can effectively identify individual additives in polymer systems.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"638-644"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Advertising and Front Matter. 广告和封面。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2026-06-10 DOI: 10.1177/00037028261455169

引用次数: 0

Combining Polarization Analysis and Isothermal Crystallization Behavior Elucidated by Two-Dimensional Correlation Spectroscopy for Understanding the Crystallization Properties of Poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate. EXPRESS：结合极化分析和二维相关光谱的等温结晶行为来了解聚[(R)-3-羟基丁酸盐-co-(R)-3-羟基己酸盐]的结晶性质。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-10-24 DOI: 10.1177/00037028251394393

Fran Adar, John Rabolt, Changhao Liu, Isao Noda

{"title":"Combining Polarization Analysis and Isothermal Crystallization Behavior Elucidated by Two-Dimensional Correlation Spectroscopy for Understanding the Crystallization Properties of Poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate.","authors":"Fran Adar, John Rabolt, Changhao Liu, Isao Noda","doi":"10.1177/00037028251394393","DOIUrl":"10.1177/00037028251394393","url":null,"abstract":"Poly(3-hydrxybutyrate-co-3-hydroxyhexanoate) (PHBHx) is a biopolymer that is produced and degraded by microbes. Because of the potential to replace polymers derived from petrochemicals with these materials, there is a high level of expectation for its commercial uses if its physical and chemical properties can be understood and controlled. Among other things these properties are determined by the polymer's morphology - that is its crystallinity, and orientation of both crystalline and amorphous phases. The focus on the Raman characteristics of the crystalline phase enables elucidation of the characteristics of the polymer experiencing dynamic crystallization under various conditions. In this article we will start by reviewing the changes in the Raman spectrum from an amorphous to a crystalline material in an isothermal crystallization study. In that study a correlation field splitting between a CH stretching band that interacts with the carbonyl group on the opposite chain in the unit cell was identified. Then we will show the polarized Raman spectra of single crystals which enable an explanation of the residual amorphous material seen in the spectra of single crystals. Using the information from the single crystal measurements we can then study the Raman behavior of spherulites and confirm the model that proposes an explanation for the appearance of rings in the polarized light microscope (PLM) images of some spherulites. The polarized Raman studies confirm that the crystal ribbons that grow along the radii are twisting about the growth direction. The two-dimensional correlation spectroscopy (2D-COS) analysis of the polarized spectra of spherulites suggest the presence of strain that has been proposed to induce the twisting.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"622-630"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145353558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Deviations from the Beer-Lambert Approximation Investigated Using Two-Dimensional Correlation Infrared Spectroscopy. EXPRESS：用二维相关红外光谱研究Beer-Lambert近似的偏差。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-08-01 DOI: 10.1177/00037028251368394

Thomas G Mayerhöfer, Susanne Pahlow, Uwe Hübner, Jürgen Popp

引用次数: 0

Determination of Characteristic Bands and Correlation Filters for Two-Dimensional Correlation Spectroscopy (2D-COS). EXPRESS：确定二维相关光谱（2D-COS）的特征波段和相关滤波器。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2026-01-20 DOI: 10.1177/00037028261417374

Isao Noda

引用次数: 0

Trend of Two-Dimensional Correlation Spectroscopy (2D-COS). EXPRESS：二维相关光谱（2D-COS）的发展趋势。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-08-08 DOI: 10.1177/00037028251369892

Yeonju Park, Sujin Lee, Isao Noda, Young Mee Jung

引用次数: 0

Surface-Bulk Correlation Spectroscopy for the Characterization of Ternary Adsorption. 表征三元吸附的表面-体相关光谱。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-06-30 DOI: 10.1177/00037028251350675

Mahsa Torkamanasadi, Dennis K Hore

引用次数: 0

Two-Trace Two-Dimensional (2T2D) Correlation Spectroscopy of Lymphocytes in Infectious Mononucleosis. 传染性单核细胞增多症患者淋巴细胞的双迹二维（2T2D）相关光谱。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2026-05-16 DOI: 10.1177/00037028261449822

Natalia Stach, Aleksandra Kurek, Magdalena Pietruszewska, Grażyna Biesiada, Jacek Czepiel, Malwina Birczyńska-Zych, Paulina Moskal, Monika Bociąga-Jasik, Aleksandra Wesełucha-Birczyńska

{"title":"Two-Trace Two-Dimensional (2T2D) Correlation Spectroscopy of Lymphocytes in Infectious Mononucleosis.","authors":"Natalia Stach, Aleksandra Kurek, Magdalena Pietruszewska, Grażyna Biesiada, Jacek Czepiel, Malwina Birczyńska-Zych, Paulina Moskal, Monika Bociąga-Jasik, Aleksandra Wesełucha-Birczyńska","doi":"10.1177/00037028261449822","DOIUrl":"10.1177/00037028261449822","url":null,"abstract":"Raman spectroscopy has been widely demonstrated as a powerful tool for analyzing macromolecules characteristic of living organisms. This research focuses on a detailed spectroscopic analysis of lymphocytes affected by infectious mononucleosis caused by Epstein-Barr virus (EBV, HHV-4). As shown, at least 98% of the population is infected with EBV, making it one of the most common viruses. The main aim of this study is to evaluate the capability of Raman spectroscopy to distinguish between healthy lymphocytes from those infected with EBV at an early stage of infection. Blood samples were collected from patients with infectious mononucleosis who were receiving treatment at the University Hospital in Kraków. For comparative purposes, samples from healthy volunteers were also included. To guarantee detailed analysis, Raman spectra were acquired using two excitation wavelengths: 514.5 nm and 785 nm. The two-trace two-dimensional (2T2D) correlation method was performed to recognize the difference between EBV-infected and healthy cells. Initially, mean Raman spectra were calculated for healthy and infected cells and subsequently used to generate synchronous and asynchronous 2T2D correlation maps. Analysis of the asynchronous correlation spectra reveals distinct differences between healthy and diseased lymphocytes for both excitation wavelengths. For example, asynchronous peaks at 514.5 nm excitation indicate the beginning of immunoglobulin formation, while at 785 nm excitation indicate Tyrosine phosphorylation, which corresponds to activation of lymphocytes. The detection of specific biochemical alterations shows the potential of Raman spectroscopy as a non-invasive diagnostic tool in viral infections.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"645-653"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147959297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Two-Dimensional (2D) Polarized Near-Infrared (NIR) Correlation Spectroscopy for Characterizing Reorientation of Low-Density Polyethylene (LDPE). EXPRESS：二维（2D）偏振近红外（NIR）相关光谱表征低密度聚乙烯（LDPE）重定向。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2026-02-16 DOI: 10.1177/00037028261426391

Hideyuki Shinzawa

{"title":"Two-Dimensional (2D) Polarized Near-Infrared (NIR) Correlation Spectroscopy for Characterizing Reorientation of Low-Density Polyethylene (LDPE).","authors":"Hideyuki Shinzawa","doi":"10.1177/00037028261426391","DOIUrl":"10.1177/00037028261426391","url":null,"abstract":"A polarized near-infrared (NIR) study for characterizing the orientation distribution of polymer chains is described. A low-density polyethylene (LDPE) sheet prepared with a hot rolling press is gradually rotated while being probed with a high-speed polarized NIR spectrometer based on an acousto-optic tunable filter (AOTF) to obtain a series of NIR spectra. During the change in the rotation angle, the spectral feature varies depending on the direction of the molecular vibration within the sample. The fine features of the spectral changes are readily analyzed with the two-trace two-dimensional (2T2D) correlation method by using the spectrum measured at 0° as a sample spectrum. The asynchronous correlation intensities between the crystalline and amorphous bands of the LDPE exhibited a sinusoidal variation depending on the selected reference spectrum (i.e., polarization angle). In particular, the intensities provide local maximum points at 90° and 270° where the direction of the polarized NIR light becomes parallel to the hot rolling direction. Consequently, the cyclic pattern of the asynchronous correlation intensity suggests that the hot rolling treatment substantially induces the reorientation of the polymer chains and subsequent additional crystallization, which makes the LDPE hard and brittle.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"631-637"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146206511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Spectroscopic Study of Solution Crystallization of a Biodegradable Polyester Streamlined with a Correlation Filter (CF). EXPRESS：具有相关过滤器（CF）的生物可降解聚酯流线型溶液结晶的光谱研究。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2026-06-01 Epub Date: 2025-08-11 DOI: 10.1177/00037028251370762

Yeonju Park, Young Mee Jung, Isao Noda

引用次数: 0