New covalently tethered CO2 adsorbents are synthesized through the in situ polymerization of N-carboxyanhydride (NCA) of l-alanine from amine-functionalized three-dimensional (3D) interconnected macroporous silica (MPS). The interconnected macropores provide low-resistant pathways for the diffusion of CO2 molecules, while the abundant mesopores ensure the high pore volume. The adsorbents exhibit high molecular weight (of up to 13058 Da), high amine loading (more than 10.98 mmol N g(-1)), fast CO2 capture kinetics (t1/2 < 1 min), high adsorption capacity (of up to 3.86 mmol CO2 g(-1) in simulated flue gas and 2.65 mmol CO2 g(-1) in simulated ambient air under 1 atm of dry CO2), as well as good stability over 120 adsorption-desorption cycles, which allows the overall CO2 capture process to be promising and sustainable.

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Covalently grafted polyethyleneimine–hydroxylated three-dimensional graphene nanocomposites prepared by ring-opening polymerization exhibit superior CO2 capture behavior.

Ti3C2(OH)x–polyethyleneimine-1,2-butylene oxide (Ti3C2/PEI/BO) nanocomposite with superior CO2 capture performance.

The flammability characterization and thermal composition of polymers flame retarded by decabromodiphenylethane (DBDPE) and antimony trioxide (Sb 2 O 3 ) were studied by cone calorimeter and thermogravimetry (TG). The results show that ABS/DBDPE/Sb 2 O 3 has the similar flammability parameters and thermal composition curves to ABS/DBDPO/Sb 2 O 3. It suggests that DBDPE/Sb 2 O 3 has the similar flame retardant behavior to DBDPO/Sb 2 O 3 . The heat release rate (HRR) and the effect heat combustion (EHC) curves of polymers flame retarded by DBDPE/Sb 2 O 3 all decrease, but the mass loss rate (MLR) curve slightly increase. It shows that the decrease of HRR is not due to the increase of char formation ratio but the generation of incombustible gases. The major flame retardant mechanism of DBDPE/Sb 2 O 3 is gas phase flame retardant mechanism. Increasing content of Sb 2 O 3 in DBDPE/Sb 2 O 3 can improve the flame retardant property and thermal stability of acrylonitrile butadiene styrene. Sb 2 O 3 has a good synergistic effect with DBDPE.