Solvent-free preparation of uniform styrene/maleimide copolymer microspheres from solid poly(styrene-alt-maleic anhydride) microspheres

Abstract

A method to prepare uniform styrene/maleimide copolymer (SMI) microspheres from poly(styrene-alt-maleic anhydride) (SMA) and gaseous amine by solvent-free pathway was developed. In this approach, SMA microspheres were firstly prepared by...

Preparation of core–shell nanoparticlesviaemulsion polymerization induced self-assembly using a maleamic acid-α-methyl styrene copolymer as a macro-initisurf

“…The conversion degree of anhydride groups in MAH- alt -AMS increased linearly up to 91% before 60 minutes, and then slowly reached 100% until the reaction time was extended to 4 h. However, for the ammonolysis of SMA, 5 min is enough to convert all MAH groups into MAA groups according to our pervious study. 33 Comparing the BET data of SMA (specific surface area, 16.8 m 2 g −1 ; pore volume, 0.100 cm 3 g −1 ) and MAH- alt -AMS (specific surface area, 5.42 m 2 g −1 ; pore volume, 0.014 cm 3 g −1 , Fig. S1C and S1D†), we found that MAH- alt -AMS had a denser structure.…”

Waste to Treasure: Preparation of Functional Polymeric Particles from Waste Olefins in Carbolic Oil by Self-Stabilized Precipitation Polymerization

“…With abundant maleic anhydride functional groups, CMA polymers can be easily modified through chemical reactions, such as amination and imidization, to obtain CMA derivatives in the amic acid and imide form, respectively (Scheme ). As recently reported in the literature, styrene–maleic anhydride (SMA) particles obtained by the 2SP method can react directly with ammonia gas, probably because of their nanopore structures, and this solid–gas reaction does not change the particle morphology . Therefore, we conducted a similar solid–gas reaction between CMA particles and ammonia gas and obtained carbolic oil–maleamic acid copolymers (CMAA).…”

“…As recently reported in the literature, styrene−maleic anhydride (SMA) particles obtained by the 2SP method can react directly with ammonia gas, probably because of their nanopore structures, and this solid−gas reaction does not change the particle morphology. 34 Therefore, we conducted a similar solid−gas reaction between CMA particles and ammonia gas and obtained carbolic oil−maleamic acid copolymers (CMAA). Furthermore, after heating treatment, the maleamic acid groups on CMAA were converted into maleimide groups to form carbolic oil−maleimide copolymers (CMI).…”

Співполімери Малеїнового Ангідриду І Стиролу Та Іонообмінні Плівочні Матеріали На Їх Основі

“…Зокрема, натрієву сіль гідролізованого SMA використано як емульгатор в процесі створення термохромних мікроінкапсульованих фазоперемінних матеріалів з визначною здатністю до зберігання та вивільнення прихованої теплової енергії [9]. На основі безпосередньо SMA виготовлено мікросфери з поліпшеними властивостями шляхом обробки газоподібними амінами [10].…”