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Thermal Modeling of Material Extrusion Additive Manufacturing 材料挤压增材制造的热建模
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/BK-2019-1315.CH007
Masoumeh Pourali, Amy M. Peterson
{"title":"Thermal Modeling of Material Extrusion Additive Manufacturing","authors":"Masoumeh Pourali, Amy M. Peterson","doi":"10.1021/BK-2019-1315.CH007","DOIUrl":"https://doi.org/10.1021/BK-2019-1315.CH007","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72663051","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}
引用次数: 12
Combining Modeling and Measurements To Predict Crystal Morphology in Material Extrusion 结合建模和测量预测材料挤压过程中的晶体形态
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/BK-2019-1315.CH006
C. McIlroy, J. Seppala, Anthony P. Kotula
{"title":"Combining Modeling and Measurements To Predict Crystal Morphology in Material Extrusion","authors":"C. McIlroy, J. Seppala, Anthony P. Kotula","doi":"10.1021/BK-2019-1315.CH006","DOIUrl":"https://doi.org/10.1021/BK-2019-1315.CH006","url":null,"abstract":"Semicrystalline polymer melts are commonly used in material extrusion (MatEx) for 3D printing. Although flows have a profound effect on polymer crystallization, the relationship between typical MatEx deformation rates and printed-part crystal morphology is yet to be understood. Here, MatEx is used to print a wall of polylactic acid filaments. The linear rheology and quiescent crystallization kinetics are characterized, infrared imaging is used to measure temperature variations during the MatEx process, and optical microscopy is employed to determine the resulting crystal morphology before and after a postprinting thermal annealing process. Our flow-enhanced crystallization model demonstrates that MatEx-induced polymer stretch leads to a higher nucleation density and greater space filling in the weld regions between deposited filaments. Consequently, after annealing, the weld regions feature smaller spherulites than the filament center, as shown by optical microscopy. Finally, flow-induced crystallization is proposed as a method to improve weld toughness.","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74932854","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}
引用次数: 17
Advancing Professional Knowledge and Skills for Chemistry Teaching through an Online Master’s Degree for Secondary-Level Chemistry Teachers 通过二级化学教师在线硕士学位提高化学教学专业知识和技能
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/BK-2019-1335.CH005
Sarah B. Boesdorfer
{"title":"Advancing Professional Knowledge and Skills for Chemistry Teaching through an Online Master’s Degree for Secondary-Level Chemistry Teachers","authors":"Sarah B. Boesdorfer","doi":"10.1021/BK-2019-1335.CH005","DOIUrl":"https://doi.org/10.1021/BK-2019-1335.CH005","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75123261","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}
引用次数: 1
Computational Narrative Activities: Combining Computing, Context, and Communication To Teach Chemical Concepts 计算叙事活动:结合计算、情境和交流来教授化学概念
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/BK-2019-1312.CH012
S. Singleton
{"title":"Computational Narrative Activities: Combining Computing, Context, and Communication To Teach Chemical Concepts","authors":"S. Singleton","doi":"10.1021/BK-2019-1312.CH012","DOIUrl":"https://doi.org/10.1021/BK-2019-1312.CH012","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77485994","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}
引用次数: 0
Video Assessment of Students’ Lab Skills 学生实验技能视频评估
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/bk-2019-1325.ch006
Catherine Skibo
{"title":"Video Assessment of Students’ Lab Skills","authors":"Catherine Skibo","doi":"10.1021/bk-2019-1325.ch006","DOIUrl":"https://doi.org/10.1021/bk-2019-1325.ch006","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80149910","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}
引用次数: 2
Redox Polyion Complex Micelle-Based Injectable Hydrogel as Local Reactive Oxygen Species Scavenging Therapeutics 基于氧化还原多离子络合物胶束的可注射水凝胶作为局部活性氧清除疗法
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/bk-2019-1309.ch012
L. Vong, Y. Nagasaki
{"title":"Redox Polyion Complex Micelle-Based Injectable Hydrogel as Local Reactive Oxygen Species Scavenging Therapeutics","authors":"L. Vong, Y. Nagasaki","doi":"10.1021/bk-2019-1309.ch012","DOIUrl":"https://doi.org/10.1021/bk-2019-1309.ch012","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80256846","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}
引用次数: 2
Using Just-in-Time Teaching To Engage Rural Students in Small Enrollment Organic Chemistry Classes 在小班有机化学课堂中运用准时化教学吸引农村学生
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/bk-2019-1336.ch002
Mary S. Lenczewski
{"title":"Using Just-in-Time Teaching To Engage Rural Students in Small Enrollment Organic Chemistry Classes","authors":"Mary S. Lenczewski","doi":"10.1021/bk-2019-1336.ch002","DOIUrl":"https://doi.org/10.1021/bk-2019-1336.ch002","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85489319","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}
引用次数: 1
Analytical Techniques for the Identification and Quantification of Drugs and Metabolites in Wastewater Samples 废水样品中药物和代谢物的鉴定和定量分析技术
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/BK-2019-1319.CH002
Nicole Centazzo, M. Concheiro-Guisan
{"title":"Analytical Techniques for the Identification and Quantification of Drugs and Metabolites in Wastewater Samples","authors":"Nicole Centazzo, M. Concheiro-Guisan","doi":"10.1021/BK-2019-1319.CH002","DOIUrl":"https://doi.org/10.1021/BK-2019-1319.CH002","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76816491","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}
引用次数: 1
From DUIs to Stolen Treasure: Using Real-World Sample Analysis To Increase Engagement and Critical Thinking in Analytical Chemistry Courses 从酒后驾车到被盗的宝藏:使用真实世界的样本分析来提高分析化学课程的参与度和批判性思维
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/bk-2019-1324.ch010
Sarah E. C. Gray
{"title":"From DUIs to Stolen Treasure: Using Real-World Sample Analysis To Increase Engagement and Critical Thinking in Analytical Chemistry Courses","authors":"Sarah E. C. Gray","doi":"10.1021/bk-2019-1324.ch010","DOIUrl":"https://doi.org/10.1021/bk-2019-1324.ch010","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80933245","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}
引用次数: 0
Thermal Decomposition of Wood-Derived Organic Matter under Specific Industrial Process Conditions 特定工业工艺条件下木材衍生有机物的热分解
ACS Symposium Series Pub Date : 2019-01-01 DOI: 10.1021/bk-2019-1321.ch005
Johannes Kiefl, Sandra Boerding, Birgit Kohlenberg, Michael Backes, Petra Slabizki, Smita Raithore, G. Krammer
{"title":"Thermal Decomposition of Wood-Derived Organic Matter under Specific Industrial Process Conditions","authors":"Johannes Kiefl, Sandra Boerding, Birgit Kohlenberg, Michael Backes, Petra Slabizki, Smita Raithore, G. Krammer","doi":"10.1021/bk-2019-1321.ch005","DOIUrl":"https://doi.org/10.1021/bk-2019-1321.ch005","url":null,"abstract":"","PeriodicalId":7028,"journal":{"name":"ACS Symposium Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83597897","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}
引用次数: 0
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