Scholars@Duke
Dorian Canelas

Dorian Canelas

Associate Professor of the Practice of Chemistry
Chemistry
dorian.canelas@duke.edu
Box 90346, Durham, NC 27708-0346
1223 French Family Science Cen, 124 Science Drive, Box 3236, Durham, NC 27708

Selected Publications

Cultivating PhD Aspirations during College.

Journal Article CBE Life Sci Educ · June 2022 Science, technology, engineering, and mathematics (STEM) career barriers persist for individuals from marginalized communities due to financial and educational inequality, unconscious bias, and other disadvantaging factors. To evaluate differences in plans ... Full text Open Access Link to item Cite

Persistence, performance, and goal setting in massive open online courses

Journal Article British Journal of Educational Technology · May 1, 2021 Goal setting is an important component in successful teaching and learning, but relatively little is known about its impact on course persistence and achievement in massive open online courses. Using an experimental design and employing a variety of data i ... Full text Open Access Cite

Learners’ Perceptions and Experiences of Two Chemistry MOOCs: Implications for Teaching and Design

Journal Article American Journal of Distance Education · October 2, 2019 Featured Publication Most Massive Open Online Courses (MOOC) research studies have focused on students’ demographics, surveys, and retention data, while little attention has been paid to the authentic voices of the learners: the expressions of experiences, perceptions, and emo ... Full text Cite

Transition of Mathematics Skills into Introductory Chemistry Problem Solving

Chapter · January 1, 2019 Featured Publication We investigate and discuss the math-chemistry link for a subpopulation of undergraduate learners present at every institution: students who have extremely limited experience with chemistry problem solving or have standardized test math scores in the lowest ... Full text Cite

Cooperative Learning in Large Sections of Organic Chemistry: Transitioning to POGIL

Journal Article ACS Symposium Series · January 1, 2019 Featured Publication A brief review of recent literature describing cooperative learning in organic chemistry, and the use of POGIL in particular, is presented. A case study of the steps one instructor took to implement the POGIL pedagogy will be outlined along with instructor ... Full text Open Access Cite

Understanding the massive open online course (MOOC) student experience: An examination of attitudes, motivations, and barriers

Journal Article Computers and Education · July 1, 2017 During the widespread development of open access online course materials in the last two decades, advances have been made in understanding the impact of instructional design on quantitative outcomes. Much less is known about the experiences of learners tha ... Full text Open Access Cite

Cooperative learning in organic chemistry increases student assessment of learning gains in key transferable skills

Journal Article Chemistry Education Research and Practice · January 1, 2017 Science and engineering educators and employers agree that students should graduate from college with expertise in their major subject area as well as the skills and competencies necessary for productive participation in diverse work environments. These co ... Full text Open Access Cite

Online Courses and Online Tools for Chemical Education

Chapter · January 1, 2017 This introductory chapter provides current context for the state of the art and practice in online tools and experiments in chemical education. In addition to providing an overview of the specific work detailed in the chapters of this volume, some importan ... Full text Cite

Implementation of Online Lecture Videos in Introductory Chemistry

Conference ACS Symposium Series · January 1, 2016 We describe a case study involving the preparation of an extensive set of online videos to web-enhance a campus-based introductory chemistry class. Student performance and perceptions were compared for two groups: an experimental group, who could freely ac ... Full text Cite

Teaching college chemistry to the edges rather than to the average: Implications for less experienced science students

Conference ACS Symposium Series · January 1, 2015 Students in the lowest quartile of their matriculating class in terms of the math and science experiences usually struggle in their first chemistry course in college. Although math and science experience closely tracks with family income and access to adva ... Full text Cite

Writing to learn and learning to write across the disciplines: Peer-to-peer writing in introductory-level MOOCs.

Journal Article International Review of Research in Open and Distance Learning, · October 2014 Open Access Cite

The science advancement through group engagement program: Leveling the playing field and increasing retention in science

Journal Article Journal of Chemical Education · January 14, 2014 How can colleges and universities keep an open gateway to the science disciplines for the least experienced first-year science students while also maintaining high standards that challenge the students with the strongest possible high school backgrounds? T ... Full text Cite

Top-down particle fabrication: control of size and shape for diagnostic imaging and drug delivery.

Journal Article Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · July 2009 This review discusses rational design of particles for use as therapeutic vectors and diagnostic imaging agent carriers. The emerging importance of both particle size and shape is considered, and the adaptation and modification of soft lithography methods ... Full text Cite

Properties and toughening of heat-resistant thermosets based on unsaturated ester resins

Journal Article Journal of Applied Polymer Science · October 24, 2002 We describe our investigations of the curing chemistry and properties of heat-resistant thermosets comprised of unsaturated ester resins. We suggest a mechanism for the rearrangement of the cured matrix and volatile evolution during the curing process. We ... Full text Cite

Polymerizations in Supercritical Carbon Dioxide.

Journal Article Chemical reviews · February 1999 Full text Cite

Small angle neutron scattering from polymers in supercritical carbon dioxide

Journal Article Neutron News · January 1, 1999 Above its critical point, carbon dioxide forms a supercritical (SC) solvent which promises to be an environmentally responsible replacement for the organic solvents currently used in polymer synthesis and processing. CO2–soluble molecules (e.g. tluoropolym ... Full text Cite

Polymer shake up

Journal Article Chemistry in Britain · December 1, 1998 Cite

Interfacial activity of polymeric surfactants at the polystyrene-carbon dioxide interface

Journal Article Langmuir · November 24, 1998 The reduction of the interfacial tension at the polystyrene (PS, Mn = 1850)-supercritical CO2 interface is reported for poly(1,1-dihydroperfluorooctyl acrylate) (PFOA) and the block copolymers PS-b-PFOA (3.7K/ 27K) and PS-b-poly(dimethylsiloxane) (PDMS) (2 ... Full text Cite

Design and synthesis of silicone-based surfactants for carbon dioxide applications

Journal Article American Chemical Society, Polymer Preprints, Division of Polymer Chemistry · March 1, 1998 Cite

Design and utilization of surfactants for CO2

Journal Article ACS Division of Environmental Chemistry, Preprints · December 1, 1997 Cite

Carbon dioxide as a continuous phase for polymer synthesis

Journal Article Plastics Engineering · December 1, 1997 Cite

Dispersion polymerizations of styrene in carbon dioxide stabilized with poly(styrene-b-dimethylsiloxane)

Journal Article Macromolecules · September 22, 1997 Herein we report the use of poly(styrene-b-dimethylsiloxane) block copolymers as steric stabilizers for dispersion polymerizations of styrene in a carbon dioxide continuous phase. It was demonstrated that the anchor-soluble balance (ASB) of the stabilizer ... Full text Cite

Preparation of poly(vinyl acetate) latexes in liquid and supercritical carbon dioxide

Journal Article American Chemical Society, Polymer Preprints, Division of Polymer Chemistry · September 1, 1997 Cite

Emulsion stabilization and flocculation in CO2. 1. Turbidimetry and tensiometry

Journal Article Macromolecules · August 25, 1997 The stabilization and flocculation of emulsions of poly(2-ethylhexyl acrylate) (PEHA) in liquid and supercritical carbon dioxide (SC-CO2) with the homopolymer poly(1,1-dihydroperfluorooctyl acrylate) (PFOA), the diblock copolymer polystyrene-b-PFOA, and th ... Full text Cite

Emulsion stabilization and flocculation in CO2. 2. Dynamic light scattering

Journal Article Macromolecules · August 25, 1997 Dynamic light scattering (DLS) was used to investigate steric stabilization and flocculation of dilute poly(2-ethylhexyl acrylate) (PEHA, Mw = 92K) emulsions in liquid CO2 at 25 °C by monitoring changes in droplet size over time at various CO2 densities. T ... Full text Cite

Polymerizations in Liquid and Supercritical Carbon Dioxide

Journal Article Advances in Polymer Science · 1997 In the past few years, remarkable progress has been made in defining the scope and limitations of carbon dioxide (CO2) as an inert polymerization medium. It has appear that CO2 represents a viable solvent choice for a variety of propagation mechanisms incl ... Cite

The morphology of block copolymer micelles in supercritical carbon dioxide by small-angle neutron and x-ray scattering

Journal Article Journal of Applied Crystallography · January 1, 1997 Above its critical point, carbon dioxide forms a supercritical fluid, which promises to be an environmentally responsible replacement for the organic solvents traditionally used in polymerizations. Many lipophilic polymers such as polystyrene (PS) are inso ... Full text Cite

Design of Nonionic Surfactants for Supercritical Carbon Dioxide

Journal Article Science (New York, N.Y.) · December 1996 Interfacially active block copolymer amphiphiles have been synthesized and their self-assembly into micelles in supercritical carbon dioxide (CO2) has been demonstrated with small-angle neutron scattering (SANS). These materials establish the design criter ... Full text Cite

Neutron scattering characterization of homopolymers and graft-copolymer micelles in supercritical carbon dioxide

Journal Article Journal of Molecular Structure · September 30, 1996 Superficial fluids (SCF) are becoming an attractive alternative to the liquid solvents traditionally used as polymerization media [1]. As the synthesis proceeds, a wide range of colloidal aggregates form, but there has hitherto been no way to measure such ... Full text Cite

Siloxane-based stabilizers for the dispersion polymerization of styrene in supercritical carbon dioxide

Journal Article American Chemical Society, Polymer Preprints, Division of Polymer Chemistry · August 1, 1996 Cite

Dispersion polymerization of styrene in supercritical carbon dioxide: Importance of effective surfactants

Journal Article Macromolecules · April 8, 1996 The dispersion polymerization of styrene in supercritical CO2 using amphiphilic diblock copolymers to impart steric stabilization was investigated. Lipophilic, CO2-insoluble materials can be effectively emulsified in carbon dioxide using amphiphilic dibloc ... Full text Cite

Dispersion polymerizations in carbon dioxide using siloxane-based stabilizers

Journal Article Macromolecules · March 1, 1996 A commercially available PDMS (poly(dimethylsiloxane)) macronomer has been used to stabilize the dispersion polymerization of MMA (methyl methacrylate) in liquid and supercritical CO2 and of styrene in supercritical CO2. Purification of the obtained PMMA s ... Full text Cite

Solution properties of a CO2-soluble fluoropolymer via small angle neutron scattering

Journal Article Journal of the American Chemical Society · January 31, 1996 Full text Cite