RT info:eu-repo/semantics/article
T1 Segmented-block poly(ether amide)s containing flexible polydisperse polyethyleneoxide sequences and rigid aromatic amide moieties
A1 Trigo López, Miriam
A1 Reglero Ruiz, José Antonio
A1 Peredo Guzmán, Patricia D.
A1 Peredo, Patricia D.
A1 Mendía Jalón, Aránzazu
A1 Muñoz Santamaría, María Asunción
A1 García García, Félix Clemente
A1 García Pérez, José Miguel
K1 condensation monomers
K1 aromatic polyamides
K1 polyethyleneoxide
K1 segmented block copolymers
K1 Química
K1 Chemistry
K1 Materiales
K1 Materials
AB We describe the synthesis and characterization of three novel aromatic diamines containing oxyethylene sequences of different lengths. These diamines were polymerized using the low-temperature solution polycondensation method with isophthaloyl chloride (IPC), terepthaloyl chloride (TPC), [1,1’-biphenyl]-4,4’-dicarbonyl dichloride (BDC), and 4,4′-oxybis(benzoyl chloride) (OBE), obtaining twelve poly(ether amide)s with short segments of polydisperse polyethyleneoxide (PEO) sequences in the polymer backbone. These polymers show reasonably high molecular mass materials (Mw > 12,000), and the relationship between their structure and properties has been carefully studied. Compared with conventional polyamides containing monodisperse PEO sequences, the polydispersity of the PEO segments within the structural units exerts a significant influence on the crystallinity, flexibility, solubility, and the thermal properties of the polymers. For instance, the all-para oriented polyamides (TPCP-A), with an average number of 8.2 ethylenoxide units per structural unit can be transformed conventionally (Tm = 259 °C) in comparison with thermally untransformable polymer with 2 ethylenoxide units (Tm = 425 °C)
PB MDPI
YR 2021
FD 2021-06
LK http://hdl.handle.net/10259/5806
UL http://hdl.handle.net/10259/5806
LA eng
NO FEDER (Fondo Europeo de Desarrollo Regional), the Spanish Agencia Estatal de Investigación (PID2020-113264RB-I00/AEI/10.13039/501100011033) and (PID2019-108583RJ-I00/AEI/ 10.13039/501100011033), and the Consejería de Educación—Junta de Castilla y León (BU306P18
DS Repositorio Institucional de la Universidad de Burgos
RD 24-nov-2024