The genus Aleurocybotus Quaintance&Baker(Hemiptera:Aleyrodidae)is a newly recorded genus in China.This new record species Aleurocybotus occiduus Russell is redescribed with morphological illustrations and photogra...The genus Aleurocybotus Quaintance&Baker(Hemiptera:Aleyrodidae)is a newly recorded genus in China.This new record species Aleurocybotus occiduus Russell is redescribed with morphological illustrations and photographs from a scanning electron microscope(SEM).Its distribution and host plant are also provided.It is compared with A.cereus Martin and A.graminicolus(Quaintance)and the geographical distribution of Aleurocybotus are noted.An identification key to Aleurocybotus species is provided.展开更多
Fully bio-based and biodegradable starch/polylactic acid blends have received increasing attentions for their biodegradability and potential to offset the use of unsustainable fossil resources,specifically,their appli...Fully bio-based and biodegradable starch/polylactic acid blends have received increasing attentions for their biodegradability and potential to offset the use of unsustainable fossil resources,specifically,their application in packaging.Herein,corn starch was first esterified with maleic anhydride and then compounded with polylactide(PLA)to prepare esterified corn starch/polylactic acid blends with starch content up to 35 wt%.The structures,morphologies,thermal and mechanical properties of starch or blends were investigated.The results showed that corn starch was successfully grafted with maleic anhydride,which showed increased crystallinity and particle size than native starch.Esterified corn starch/polylactic acid blends showed good surficial compatibility and good thermal stability with main decomposition temperature in the range of 300℃to 400℃.Additionally,incorporation of corn starch increased the hydrophilicity and water uptake of composites.However,the tensile and flexural strengths of blends decreased with increasing esterified starch amount.展开更多
基金funded by the National Natural Science Foundation of China (31930073, 31601884)the Research and Development Fund of Zhejiang A&F University (2017FR041)
文摘The genus Aleurocybotus Quaintance&Baker(Hemiptera:Aleyrodidae)is a newly recorded genus in China.This new record species Aleurocybotus occiduus Russell is redescribed with morphological illustrations and photographs from a scanning electron microscope(SEM).Its distribution and host plant are also provided.It is compared with A.cereus Martin and A.graminicolus(Quaintance)and the geographical distribution of Aleurocybotus are noted.An identification key to Aleurocybotus species is provided.
基金the Fundamental Research Funds for Higher Education Institutions of Heilongjiang Province(135309109,135409415)National Natural Science Foundation of China(51803029).
文摘Fully bio-based and biodegradable starch/polylactic acid blends have received increasing attentions for their biodegradability and potential to offset the use of unsustainable fossil resources,specifically,their application in packaging.Herein,corn starch was first esterified with maleic anhydride and then compounded with polylactide(PLA)to prepare esterified corn starch/polylactic acid blends with starch content up to 35 wt%.The structures,morphologies,thermal and mechanical properties of starch or blends were investigated.The results showed that corn starch was successfully grafted with maleic anhydride,which showed increased crystallinity and particle size than native starch.Esterified corn starch/polylactic acid blends showed good surficial compatibility and good thermal stability with main decomposition temperature in the range of 300℃to 400℃.Additionally,incorporation of corn starch increased the hydrophilicity and water uptake of composites.However,the tensile and flexural strengths of blends decreased with increasing esterified starch amount.
