This article deals with the plasma-surface modification of cellulose nanocrystals and their employment as reinforcement additive of ABS.

Syntheses of biolestomers through the coordination polymerization of terpenes, such as ocimene (Oc), β-myrcene (My) andtrans-β-farnesene (Fa), using catalyst systems based on neodymium versatate (NdV3) are reported in this work. All polymerization products were characterized by size exclusion chromatography, differential scanning calorimetry and nuclear magnetic resonance in order to determine their macromolecular, thermal and structural characteristics. The NdV3in combination with diisobutylaluminum hydride as cocatalyst and diethylaluminum chloride (DEAC) as halogen source was found effective for Oc polymerizations providing polyocimenes with molecular weights (Mn) in the order of 20 to 57 Kg/mol, broad molecular weight distributions (Mw/Mn) since 3.8 until 8.2, preferablycis-1,4 content (61-69 %) and glass transition temperatures (Tg) in the range of-30 to-26 °C. On the other hand, the same NdV3but now activated by modified methylaluminoxane and DEAC was found considerably active in My and Fa polymerizations, affording polymyrcenes and polyfarnesenes withMnbetween 155 and 243 Kg/mol, as well asMw/Mnranging between 3.1-3.9 and 1,4 content values were found higher than 94 % for this subfamily of polyterpenes, being the 3,4 content the complement for completing 100 %. Moreover, it was demonstrated thatTgof polyterpenes studied depends on the size of pendant group, shifting it towards lower temperatures as increasing the size of the pendant group.

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Summary The scientific community is actively testing new materials to enhance the electrochemical properties of supercapacitors (SCs) and the porous nanomaterials/composites have emerged as promising candidates for such purposes. In this review, we summarize the most recent strategies to enhance the capacitance and cycling stability of electrode materials/SCs using micro‐, meso‐ and macroporous structures. We described the morphology and surface properties of the porous nanomaterials/composites (containing or not carbon materials) published in the literature. Later, we explained how the parameters of pore size, pore‐volume, surface area, orientation and morphology of the nanomaterials affect the electrochemical performance of the SCs. The type of pore (micro‐, meso‐ and macropore) or the presence of various types of pores (meso‐/micro‐, macro‐/meso‐, etc) not only increased/decreased the capacitance of the materials/devices but also was critical to determine which mechanism (electric double layer or redox) was dominant for the charge storage. This review is useful to understand the main phenomena that affect the performance of SCs based on porous materials as well as to design new types of porous nanostructures with new physical and chemical properties, which in turn, would improve the lifetime and the charge storage capabilities of SCs.

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