Polymer chemistry is an important subject in the undergraduate
chemistry curriculum. It is required for ACS-certified degrees and
significantly connects to real world issues like the plastic waste
crisis. While some concepts of polymer chemistry can be incorporated
into lecture courses, students’ understanding of material properties
and structure–property relationships benefits from hands-on
laboratory experiences. Here, we describe the development of an inquiry-based
laboratory experiment starting from the classic Nylon Rope demonstration.
This experiment involves a three-stage feedback loop, through which
students develop their own protocols for the synthesis, characterization,
and analysis of Nylon-6,10 and two new nylon polymers. Students propose
the structure of the new nylons based on “what if” questions
they develop. This strategy allows students to ask research questions
without requiring advanced knowledge. This experiment is designed
to be flexible and easily adapted and can therefore be implemented
in both upper and lower division undergraduate laboratory courses.
Scanning electron microscopy (SEM) was used to visualize the nylon
fibers. Though this technique is not commonly employed in undergraduate
laboratories, the ability to compare differences in morphological
features to spectroscopic and thermal data strengthened the students’
understanding of the polymer structure and its relationship to the
material properties. This inquiry-driven experiment provides a framework
for incorporating polymer chemistry into laboratories across the chemistry
curriculum and can serve as a model for transforming classic demonstrations
into inquiry-based experiences.
Gold-based catalysts have received tremendous attention as supports and nanoparticles for heterogeneous catalysis, in part due to the ability of nanoscale Au to catalyze reactions at low temperatures in oxidative...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.