Peer doula support training for Black and Indigenous groups in Nova Scotia, Canada: A community-based qualitative study.

OBJECTIVES: The objectives of this qualitative study were to explore participant experiences of doula training programs offered by a prisoner health advocacy organization and Indigenous and Black community groups. DESIGN: This investigation employed a qualitative design. Recruitment was conducted through email. Interviews were conducted in Winter 2020. Data were analyzed using thematic analysis. SAMPLE: A total of 12 participants were recruited to participate in this study. Six participants identify as Black and six identify as Indigenous. All participants identify as women. MEASUREMENTS: Qualitative interviews were conducted using a semi-structured interview guide to elicit a breadth of information. RESULTS: Key themes included training experiences, training improvements and ''bridging the gap''. The training validated participants' experiences of birth and began to address the exclusion of Black and Indigenous people from birth work. However, participants expressed concerns about not being adequately positioned for sustained participation in birth work. CONCLUSIONS: Participants expressed receiving great value from the training programs. These trainings, which were fully subsidized, removed a financial barrier. However, these trainings do not address the exclusion of Black and Indigenous people from perinatal work or the lack or sustainable support systems for Black and Indigenous communities. This study makes several recommendations for future interventions.

Polymerization-induced thermal self-assembly (PITSA).

Polymerization-induced self-assembly (PISA) is a versatile technique to achieve a wide range of polymeric nanoparticle morphologies. Most previous examples of self-assembled soft nanoparticle synthesis by PISA rely on a growing solvophobic polymer block that leads to changes in nanoparticle architecture during polymerization in a selective solvent. However, synthesis of block copolymers with a growing stimuli-responsive block to form various nanoparticle shapes has yet to be reported. This new concept using thermoresponsive polymers is termed polymerization-induced thermal self-assembly (PITSA). A reversible addition-fragmentation chain transfer (RAFT) polymerization of N-isopropylacrylamide from a hydrophilic chain transfer agent composed of N,N-dimethylacrylamide and acrylic acid was carried out in water above the known lower critical solution temperature (LCST) of poly(N-isopropylacrylamide) (PNIPAm). After reaching a certain chain length, the growing PNIPAm self-assembled, as induced by the LCST, into block copolymer aggregates within which dispersion polymerization continued. To characterize the nanoparticles at ambient temperatures without their dissolution, the particles were crosslinked immediately following polymerization at elevated temperatures via the reaction of the acid groups with a diamine in the presence of a carbodiimide. Size exclusion chromatography was used to evaluate the unimer molecular weight distributions and reaction kinetics. Dynamic light scattering and transmission electron microscopy provided insight into the size and morphologies of the nanoparticles. The resulting block copolymers formed polymeric nanoparticles with a range of morphologies (e.g., micelles, worms, and vesicles), which were a function of the PNIPAm block length.