The　stable　adsorption　of　chitosan　nanoparticles　(CNs)　onto　cotton　fabrics　was　successfully　developed　without　any　chemical　binders.　The　adsorption　kinetics,　thermodynamics,　and　capacities　under　different　experimental　conditions　were　investigated.　The　structure　and　laundering　durability　of　CNs-adsorbed　cotton　fabrics　(CNs-cotton)　were　also　characterized　by　Scanning　Electron　Microscope　(SEM),　Fourier　Transform　Infrared　Spectroscopy　(FTIR),　X-ray　Photoelectron　Spectroscopy　(XPS),　and　Thermo　Gravimetric　Analysis　(TGA).　The　adsorption　capacities　of　cotton　for　CNs　declined　with　the　increasing　CNs　particle　size　and　temperature.　By　contrast,　adsorption　capacities　increased　with　the　increasing　adsorption　pH　and　CNs　mass　concentration.　The　kinetic　adsorption　of　CNs　onto　cotton　fabrics　was　found　to　follow　the　pseudo-second-order　kinetic　model.　The　adsorption　mechanism　reflected　a　complex　process,　and　the　intra-particle　diffusion　was　not　the　only　rate-limiting　step.　The　transfer　and　diffusion　rates　progressively　increased　with　the　decrease　of　adsorption　temperature　and　CNs　particle　size.　The　negative　values　of　the　standard　Gibbs　free　energy　changes　(Delta　G　degrees)　and　the　standard　enthalpy　(Delta　H　degrees)　indicated　that　the　adsorption　was　exothermic　and　spontaneous　at　5-75　degrees　C.　The　superior　laundering　resistance　of　CNs-cotton　was　demonstrated　after　30　consecutive　washes,　thereby　proving　the　stable　adsorption　of　CNs　onto　cotton　fabrics　without　chemical　binders.　(c)　2014　Society　of　Plastics　Engineer