02299nas a2200229   4500008004100000022001400041245009800055210006900153260007100222300001400293490000600307520145000313653001301763653003001776653001301806653001901819653002301838100001601861700003101877700002901908856013201937       2015                        eng d  a1944-824400aMechanically stable thermally cross linked poly(acrylic acid)/reduced graphene oxide aerogels0 aMechanically stable thermally cross linked polyacrylic acidreduc  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR  a6220-62290 v73 a<p>Graphene oxide (GO) aerogels, high porosity (&gt;99%) low density (similar to 3-10 mg cm(-3)) porous materials with GO pore walls, are particularly attractive due to their lightweight, high surface area, and potential use in environmental remediation, superhydrophobic and superoleophilic materials, energy storage, etc. However, pure GO aerogels are generally weak and delicate which complicates their handling and potentially limits their commercial implementation. The focus of this work Vas to synthesize highly elastic, mechanically stable aerogels that are robust and easy to handle without substantially sacrificing their high porosity or low density. To overcome this challenge, a small amount of readily available and, thermally cross-linkable poly(acrylic acid) (PAA) was intermixed with GO to enhance the mechanical integrity Of the aerogel without disrupting other desirable characteristic properties. This method is a simple straightforward procedure that does not include multistep or complicated chemical reactions, and it produces aerogels with mass densities of about 4-6 mg cm(-3) and &gt;99.6% porosity-that can reversibly support up to 10 000 times their weight with full recovery of their original volume. Finally; pressure sensing capabilities were demonstrated and their oil absorption capacities were measured to be around 120 g oil per g aerogel(-1) which highlights their potential Use in practical applications.</p>10aaerogels10aenvironmental remediation10agraphene10aNanocomposites10apoly(acrylic acid)1 aHa, Heonjoo1 aShanmuganathan, Kadhiravan1 aEllison, Christopher, J.  uhttps://library.ncl.res.in/content/mechanically-stable-thermally-cross-linked-polyacrylic-acidreduced-graphene-oxide-aerogels-002073nas a2200265   4500008004100000022001400041245010100055210006900156260000800225300001100233490000800244520120200252653002301454653002501477653001801502653002301520653001901543653001801562100002401580700001701604700001901621700001701640700003101657856011901688       2023                        eng d  a0927-775700aDouble encapsulation of liquid active compounds using nanoclay reinforced polyurea microcapsules0 aDouble encapsulation of liquid active compounds using nanoclay r  cDEC  a1325470 v6793 a<p>
	In recent years, there has been growing interest in the double encapsulation of drugs, agrochemicals, and fragrances, aiming to achieve the highest encapsulation efficiency and preserve the activity of the encapsulated core over an extended duration. However, when active ingredients in liquid form are double encapsulated, preventing the rupture of primary microcapsules during the second encapsulation process and the leakage of the encapsulated core are major challenges. This report describes a method that utilizes polyurea and starch for successful double encapsulation of dimethyl phthalate (DMP), a liquid insect-repellent, as a model active component. We demonstrate that the incorporation of 3 wt% montmorillonite (MMT) nanoclay strengthens the polyurea wall of the primary microcapsule and prevents its rupture during double encapsulation with starch. This process facilitates the uniform distribution of polyurea microcapsules within the starch matrix and significantly improves the mechanical integrity of the nanocomposite microcapsules embedded in starch. The double-encapsulated system developed in this study significantly reduces the release rate of encapsulated DMP.</p>
10aControlled release10aDouble encapsulation10aMicrocapsules10aMicroencapsulation10aNanocomposites10aStarch matrix1 aAher, Yogeshwar, P.1 aTorris, Arun1 aAdhikari, Benu1 aShukla, Ravi1 aShanmuganathan, Kadhiravan  uhttps://library.ncl.res.in/content/double-encapsulation-liquid-active-compounds-using-nanoclay-reinforced-polyurea